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select发展史 [复制链接]

marvellous　楼主

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发表于 2006-3-24 15:29:00 |显示全部楼层

本文旨在大家对select和模拟select有一个全面地了解,使此项技术能发挥出更高的水平。
最初的select的确很平淡,就是一个下拉选项列表:

提示：您可以先修改部分代码再运行

日久天长之后,人们对select要求高了,要修一修边幅:

<br><br>
<script>
i=1;
</script>
<center>
<form name="form1">
  <select name="select01">
    <option>11111 111111 111111111111</option>
    <option>2222222</option>
    <option>333333</option>
    <option>4444444</option>
  </select>
<span style="position:relative;left:-23px;width:17px;height:17px;font:7px 'wingdings 3';color:#cc0000;background:cyan;border:2px outset;text-align:center;padding-top:3px;cursor:default" onclick="if(i>=document.form1.select01.options.length){i=0}document.form1.select01.options[i].selected=true;i++">q
<iframe src="" style="position:absolute;top:0;left:0;z-index:-1; width:15px;height:15px;filter:alpha(opacity=0))" frameborder="0"></iframe>
</span>
</form>
<br><br><br>

<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<style>
.table1{background-color:white;FONT-FAMILY: Courier New, Courier;font-size:12px}
.td_out{FONT-FAMILY: Courier New, Courier;font-size:12px;color:#000000;height:15px;border:1 solid #ffffff;}
.td_over{FONT-FAMILY: Courier New, Courier;font-size:12px;cursor:default;background-color:#3366cc;border:1 solid #000000;color:#ffffff;height:15px}
.slv{vertical-align:bottom;FONT-FAMILY: Courier New, Courier;font-size:12px;border-left-width:0;border-top-width:0;border-bottom-width:0;border-right:0 solid #000000;vertical-align:middle;height:18px;color:#000000;}
.down{position:relative;left:-2px;font-size:11px;vertical-align:middle;width:16;height:16;color:#2050b0;background-color:#D0DFF7;border:1 solid #9fA3Ce;writing-mode:tb-rl;font-weight:bold;
}
.seldiv{
position:absolute;z-index:1000;overflow-x:hidden;border-left:1 solid #000000;border-bottom:1 solid #000000;border-right:1 solid #000000;
SCROLLBAR-FACE-COLOR: #d0dff7; 
SCROLLBAR-HIGHLIGHT-COLOR: #d0dff7; 
SCROLLBAR-SHADOW-COLOR: #FFFFFF; 
SCROLLBAR-3DLIGHT-COLOR: #FFFFFF; 
SCROLLBAR-ARROW-COLOR: #ffffff; 
SCROLLBAR-TRACK-COLOR: #ffffff; 
SCROLLBAR-DARKSHADOW-COLOR: #d0dff7;}
</style>
<script language="JavaScript">
document.onclick=hiddenDiv;
function getDivCount() {
 var arr=document.all; 
 re=0;
 for (i=0;i<arr.length;i++) {
  str=arr[i].id;  
  if (str.indexOf("ZfDiv_")==0) {   
   re++;  
  }
 } 
 return re;
}

function getI(ObjId) {//取得objId的最后一位数字
 for (i=0;i<ObjId.length;i++) {
  if (ObjId.charAt(i)=="_") return ObjId.substr(i+1,ObjId.length-1);
 }
 return 0;
}

function select_edit(TextObj){//鼠标经过高亮度 
 TextObj.focus();TextObj.select();
}

function checkValue(ID){   
 var sl=document.all["ZfText_"+ID]; 
 var sv=document.all["ZfDiv_"+ID];
 var da=document.all["ZfData_"+ID];   
 sv.style.display=''
 
 for(i=0;i<da.rows.length;i++)da.rows[i].style.display=''
 
 for(i=0;i<da.rows.length;i++){
  if(da.rows[i].cells[0].innerText.indexOf(sl.value)!=0)da.rows[i].style.display='none';
  getPosition(ID);
 } 
}

function getL(e){
 var l=e.offsetLeft;
 while(e=e.offsetParent){
  l+=e.offsetLeft;
 }
 return l
}
function getT(e){
 var t=e.offsetTop;
 while(e=e.offsetParent){
  t+=e.offsetTop;
 }
 return t
}

function hiddenDiv(){
 var o=window.event.srcElement.id;
 var tb 
 var sv 
 if(o=="") {
  for (j=0;j<getDivCount();j++) {
   tb=document.getElementById('ZfData_'+j);
   sv=document.getElementById('ZfDiv_'+j);   
   for(i=0;i<tb.rows.length;i++) tb.rows[i].style.display='';
   sv.style.display='none';   
  }
  
 }

}//隐藏模拟层

function setValue(obj){
var i=getI(obj.parentElement.parentElement.parentElement.id);
//alert(obj.parentElement.parentElement.parentElement.id);

var sl=document.all["ZfText_"+i];
var sv=document.all['ZfDiv_'+i];
sl.value=obj.innerText;
sv.style.display='none';
//sldIndex=obj.parentElement.rowIndex;
}//给文本框赋值

function over(obj){
 obj.className="td_over"
 obj.title=obj.innerText
 obj.focus();
}//鼠标经过变色

function out(obj){
 obj.className="td_out"
}//鼠标离开还原

function String.prototype.Trim(){return this.replace(/(^\s*)|(\s*$)/g,'')}//自定义去空格函数Trim()

//增加list的接口,ID表示该组控件是页面中的第几个
function add(v,ID){
var sv=document.all['ZfDiv_'+ID];
if(!v.Trim()){return;}
var tb=document.all['ZfData_'+ID];
var c=tb.insertRow(tb.rows.length).insertCell();
c.innerHTML='<nobr>'+v.Trim()+'</nobr>';
c.onmouseover=new Function("over(this)");
c.onmouseout=new Function("out(this)");
c.onclick=new Function("setValue(this)");
c.className="td_out";
v='';
}
//增加inpnubox的接口,在页面中产生一个inputbox控件,下拉列表为空
function addText(name,DefValue) {
 var i=getDivCount();
 document.write('<span id="ZfSpan_'+i+'" style="border:1 solid #9CA0CB">');
 document.write('<input type="text" value="'+DefValue+'" name="'+name+'" id="ZfText_'+i+'" ondblclick="ZfDrop_'+i+'.click()" class="slv" onmouseover="select_edit(this)"  onkeyup="checkValue('+i+')"><input type=button id="ZfDrop_'+i+'" value=">" onclick="this.hideFocus=true;dropDown('+i+');" class="down" onmouseover="this.style.backgroundColor=#EEF3FD" onmouseout="this.style.backgroundColor=\'\'" onmousedown="this.style.backgroundColor=#ABC4F5" onmouseup="this.style.backgroundColor=\'\'"></span>');
 document.write('<div id="ZfDiv_'+i+'" class="seldiv" style="display:none;"><table id="ZfData_'+i+'" onselectstart="return false" border="0"  cellspacing="0" cellpadding="0" class="table1"></table></div>');
}

</script>
</head>
<body>

提示：您可以先修改部分代码再运行

要加一些链接,变成菜单:

<STYLE>
body { cursor: url(http://vip.6to23.com/candylau/image/xiucursor.cur)}
</STYLE>

dropdown = el.children[1];

if (size != null) {
        if (size > 1) {
            el.size = size;
            dropdown.style.zIndex = 0;
            initSized(el);
        }
        else {
            el.size = 1;
            dropdown.style.zIndex = 99;
            if (dropdown.offsetHeight > 200) {
                dropdown.style.height = "200";
                dropdown.style.overflow = "auto";
            }
        }
    }
    
    highlightSelected(el,true);
}

function int_remove(el,i) {
    if (el.options[i] != null)
        el.options[i].outerHTML = "";
}

function int_add(el, e, i) {
    var html = "<div class='option' noWrap";
    if (e.value != null)
        html += " value='" + e.value + "'";
    if (e.style.cssText != null)
        html += " style='" + e.style.cssText + "'";
    html += ">";
    if (e.text != null)
        html += e.text;
    html += "</div>"

if ((i == null) || (i >= el.options.length))
        i = el.options.length-1;
    el.options[i].insertAdjacentHTML("AfterEnd", html);
}
    
function initSized(el) {
    var h = 0;
    el.children[0].style.display = "none";
    dropdown = el.children[1];
    dropdown.style.visibility = "visible";

if (dropdown.children.length > el.size) {
        dropdown.style.overflow = "auto";
        for (var i=0; i<el.size; i++) {
            h += dropdown.children[i].offsetHeight;
        }

if (dropdown.style.borderWidth != null) {
            dropdown.style.pixelHeight = h + 4;
        }

else
            dropdown.style.height = h;
    }

dropdown.style.border = sizedBorderCss;
    el.style.height = dropdown.style.pixelHeight;
}

function copySelected(el) {
    var selectedIndex = findSelected(el);
    selectedCell = el.children[0].rows[0].cells[0];
    selectedDiv  =     el.children[1].children[selectedIndex];
    selectedCell.innerHTML = selectedDiv.outerHTML;
}

function findSelected(el) {
    var selected = null;

ec = el.children[1].children;
    var ecl = ec.length;
    
    for (var i=0; i<ecl; i++) {
        if (ec[i].getAttribute("selected") != null) {
            if (selected == null) {
                selected = i;
            }
            else
                ec[i].removeAttribute("selected");
        }
    }
    if (selected == null)
        selected = 0;

return selected;
}

function toggleDropDown(el) {
    if (el.size == 1) {
        dropDown = el.children[1];
        
        if (dropDown.style.visibility == "")
            dropDown.style.visibility = "hidden";
            
        if (dropDown.style.visibility == "hidden")
            showDropDown(dropDown);
        else
            hideDropDown(dropDown);
    }
}

function optionClick() {
    el = getReal(window.event.srcElement, "className", "option");

if (el.className == "option") {
        dropdown  = el.parentElement;
        selectBox = dropdown.parentElement;
        oldSelected = dropdown.children[findSelected(selectBox)]

if(oldSelected != el) {
            oldSelected.removeAttribute("selected");
            el.setAttribute("selected", 1);
            selectBox.selectedIndex = findSelected(selectBox);
        }

if (selectBox.onchange != null) {
            if (selectBox.id != "") {
                eval(selectBox.onchange.replace(/this/g, selectBox.id));
            }
            else {
                globalSelect = selectBox;
                eval(selectBox.onchange.replace(/this/g, "globalSelect"));
            }
        }

if (el.backupCss != null)
        el.style.cssText = el.backupCss;
        copySelected(selectBox);
        toggleDropDown(selectBox);
        highlightSelected(selectBox, true);
    }
}

function optionOver() {
    var toEl = getReal(window.event.toElement, "className", "option");
    var fromEl = getReal(window.event.fromElement, "className", "option");
    if (toEl == fromEl) return;
    var el = toEl;
    if (el.className == "option") {
        if (el.backupCss == null)
            el.backupCss = el.style.cssText;
        highlightSelected(el.parentElement.parentElement, false);
        el.style.cssText = el.backupCss + "; " + overOptionCss;
        this.highlighted = true;
    }
}

if (el.className == "option") {
        if (el.backupCss != null)
            el.style.cssText = el.backupCss;
    }

}

function hideDropDown(el) {
    if (typeof(fade) == "function")
    fade(el, false);
    else
    el.style.visibility = "hidden";
}

function showDropDown(el) {
    if (typeof(fade) == "function")
    fade(el, true);
    else if (typeof(swipe) == "function")
    swipe(el, 2);
    else
    el.style.visibility = "visible";
}

function initSelectBoxes() {
var spans = document.all.tags("SPAN");
var selects = new Array();
var index = 0;

for (var i=0; i<spans.length; i++) {
if (spans[i].className == "select")
selects[index++] = spans[i];
}
for (var j=0; j<selects.length; j++) {
initSelectBox(selects[j]);
}    
}

function createIEString(matrix, id, size, onchange, css) {
    var str = "";
        str += '<span class="select"';
        if (size == null)
            size = 1;
        str += ' size="' + size + '"';    
        if (id != null)
            str += ' id="' + id + '"';
        if (onchange != null)
            str += ' onchange="' + onchange + '"';
        if (css != null)
        str += ' style="' + css + '"';
        str += '>\n';
        str += '<table class="selectTable" cellspacing="0" cellpadding="0"\n';
        str += ' onclick="toggleDropDown(this.parentElement)">\n';
        str += '<tr>\n';
        str += '<td class="selected"> </td>\n';
        str += '<td align="CENTER" valign="MIDDLE" class="Button"\n';
        str += ' onmousedown="this.style.border=\'2 inset buttonhighlight\'"\n';
        str += ' onmouseup="this.style.border=\'2 outset buttonhighlight\'">\n';
        str += '<span style="position: relative; left: 0; top: -2; width: 100%;">6</span></td>\n';
        str += '</tr>\n';
        str += '</table>\n';
        str += '<div class="dropDown" onclick="optionClick()" onmouseover="optionOver()" onmouseout="optionOut()">\n';
        
        for (var i=0; i<matrix.length; i++) {
            html     = matrix[i].html;
            value    = matrix[i].value;
            css      = matrix[i].css;
            selected = matrix[i].selected;
            str += '<div class="option"';
            if (value != null)
                str += ' value="' + value + '"';
            if (css != null)
                str += ' style="' + css + '"';
            if (selected != null)
                str += ' selected';
            str += '>\n';
            str += html;
            str += '</div>\n';
        }
        str += '</div>\n';
        str += '</span>\n';
    return str;
}

function createXString(matrix, id, size, onchange, css) {
var str = '<form>\n';
str += '<select';
if (size == null)
    size = 1;
str += ' size="' + size + '"';    
if (id != null)
    str += ' id="' + id + '"';
if (onchange != null)
    str += ' onchange="' + onchange + '"';
str += '>\n';

for (var i=0; i<matrix.length; i++) {
    html     = matrix[i].html;
    value    = matrix[i].value;
    css      = matrix[i].css;
    selected = matrix[i].selected;
    str += '\n<option';
    if (value != null)
    str += ' value="' + value + '"';
    if (selected != null)
        str += ' selected';
    str += '>';
    str += stripTags(html);
    str += '</option>\n';
    }
    str += '\n</select>\n';
    str += '</form>\n';
return str;
}

function stripTags(str) {
    var s = 0;
    var e = -1;
    var r = "";
    s = str.indexOf("<",e);    
    do {
        r += str.substring(e + 1,s);
        e = str.indexOf(">",s);
        s = str.indexOf("<",e);
    }
    while ((s != -1) && (e != -1))
    r += str.substring(e + 1,str.length);
    return r;
}

function Option(html, value, css, selected) {
    this.html = html;
    this.value = value;
    this.css = css;
    this.selected = selected;
}
</script>
<script type="text/javascript">
var optionArray = new Array();
optionArray[0] = new Option("Item 1", "value 1", "color: blue; text-decoration: underline;");
optionArray[1] = new Option("Item <b>2</b>", "value 2");
optionArray[2] = new Option("Item 3", "value 3", "color: red;", "selected");
optionArray[3] = new Option("Item 4", "value 4");
optionArray[4] = new Option("Item 5", "value 5");
writeSelectBox(optionArray, "select1", 1, "alert(this.options[this.selectedIndex].value)", "margin-left: 10;");
</script>
<br>
<script type="text/javascript">
writeSelectBox(optionArray, "select3", 3, "alert(this.options[this.selectedIndex].value)", "margin-left: 10;");
</script>

<br><br><br><br>
<select onchange="if(this.options[this.selectedIndex].value!=''){location=this.options[this.selectedIndex].value;}" >
<option value="http://www.163.com">网易</option>
<option value="http://www.google.com">google</option>
<option value="http://wwwsohu.com">搜狐</option>
</select>

<br><br><br><br>
<form>
<select size="1" name="D1" onchange=if(s=document.getElementById("S1")){s.style.backgroundColor=value}>
<option selected value="white">请选择颜色</option>
<option value="red">红色</option>
<option value="blue">蓝色</option>
<option value="green">绿色</option>
</select>
<br>
<textarea rows="20" name="S1" cols="35"></textarea>

</form>

提示：您可以先修改部分代码再运行

mMenu.prototype.addItem = mMenuAddItem;
function mtoout(src){

src.style.borderLeftColor=mmenuoutbordercolor;
src.style.borderRightColor=mmenuinbordercolor;
src.style.borderTopColor=mmenuoutbordercolor;
src.style.borderBottomColor=mmenuinbordercolor;
src.style.backgroundColor=mmenuoutcolor;
src.style.color=mmenuovercolor;
}
function mtoin(src){

src.style.borderLeftColor=mmenuinbordercolor;
src.style.borderRightColor=mmenuoutbordercolor;
src.style.borderTopColor=mmenuinbordercolor;
src.style.borderBottomColor=mmenuoutbordercolor;
src.style.backgroundColor=mmenuincolor;
src.style.color=mmenuovercolor;
}
function mnochange(src){
src.style.borderLeftColor=mmenucolor;
src.style.borderRightColor=mmenucolor;
src.style.borderTopColor=mmenucolor;
src.style.borderBottomColor=mmenucolor;
src.style.backgroundColor='';
src.style.color=mfontcolor;

}
function mallhide(){
	for(var nummenu=0;nummenu<mmenus.length;nummenu++){
		var themenu=document.all['mMenu'+nummenu]
		var themenudiv=document.all['mmenudiv'+nummenu]
                mnochange(themenu);
                mmenuhide(themenudiv);
                }
}
function mmenuhide(menuid){

hideSwipe(menuid);
misShow=false;
}
function mmenushow(menuid,pid){

menuid.style.left=mmenutable.offsetLeft+pid.offsetLeft+mmenuadjust;menuid.style.top=mmenutable.offsetTop-menuid.offsetHeight+mmenuadjustV;
if(mmenuitemwidth+parseInt(menuid.style.left)>document.body.clientWidth+document.body.scrollLeft)
menuid.style.left=document.body.clientWidth+document.body.scrollLeft-mmenuitemwidth;
mtmpleft=menuid.style.left;mtmptop=menuid.style.top;swipe(menuid,8,4);
misShow=true;
}
function mmenu_over(menuid,x){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
if(x==4){
  misShow = false;
  mallhide();
  mtoout(eval("mMenu"+x));
}else{
if(!misShow){mtoout(eval("mMenu"+x));}else{
  mallhide();
  mtoin(eval("mMenu"+x));
  mmenushow(menuid,eval("mMenu"+x));
}
}

}
function mmenu_out(x){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
if (misShow){
mtoin(eval("mMenu"+x));
}else{
mnochange(eval("mMenu"+x));
}

}
function mmenu_down(menuid,x){
  if(misShow){
  mmenuhide(menuid);
  mtoout(eval("mMenu"+x));
  }
  else{
  mtoin(eval("mMenu"+x));
  mmenushow(menuid,eval("mMenu"+x));
  misdown=true;
  }
}
function mmenu_up(){
  misdown=false;
}
function mmenuitem_over(x,i){
srcel = getReal(window.event.srcElement, "className", "coolButton");
if(misdown){
	mtoin(srcel);
}
else{
mtoout(srcel);
}
mthestatus = mmenus[x].items[i].statustxt;
if(mthestatus!=""){
	musestatus=true;
	window.status=mthestatus;
}

}
function mmenuitem_out(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mnochange(srcel);
if(musestatus)window.status="";

}
function mmenuitem_down(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mtoin(srcel)
misdown=true;
}
function mmenuitem_up(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mtoout(srcel)
misdown=false;
}
function mexec2(x){
var cmd;
if(mmenus[x].target=="blank"){
  cmd = "window.open('"+mmenus[x].command+"')";
}else{
  cmd = mmenus[x].target+".location=\""+mmenus[x].command+"\"";
}
eval(cmd);
}
function mexec(x,i){
var cmd;
if(mmenus[x].items[i].target=="blank"){
  cmd = "window.open('"+mmenus[x].items[i].command+"')";
}else{
  cmd = mmenus[x].items[i].target+".location=\""+mmenus[x].items[i].command+"\"";
}
eval(cmd);
}
function mbody_click(){

if (misShow){
	srcel = getReal(window.event.srcElement, "className", "coolButton");
	for(var x=0;x<=mmenus.length;x++){
		if(srcel.id=="mMenu"+x)
		return;
	}
	mallhide();
}
}
document.onclick=mbody_click;
function mwritetodocument(){
      var mwb=1;
                     var stringx='<table  id=mmenutable border=0 cellpadding=3 cellspacing=2 width='+mmenuwidth+' height='+mmenuheight+' bgcolor='+mmenucolor+
                     ' onselectstart="event.returnValue=false"'+
                     ' style="position:absolute;cursor:'+mcursor+';'+mfonts+
                     ' border-left: '+mwb+'px solid '+mmenuoutbordercolor+';'+
                     ' border-right: '+mwb+'px solid '+mmenuinbordercolor+'; '+
                     'border-top: '+mwb+'px solid '+mmenuoutbordercolor+'; '+
                     'border-bottom: '+mwb+'px solid '+mmenuinbordercolor+'; padding:0px"><tr>'
                     for(var x=0;x<mmenus.length;x++){
                     	var thismenu=mmenus[x];
                     	var imgsize="";
                     	if(thismenu.sizex!="0"||thismenu.sizey!="0")imgsize=" width="+thismenu.sizex+" height="+thismenu.sizey;
                     	var ifspace="";
                     	if(thismenu.caption!="")ifspace="&nbsp;";
                     	stringx += "<td nowrap class=coolButton id=mMenu"+x+" style='border: "+mitemedge+"px solid "+mmenucolor+
                     	"' width="+mmenuunitwidth+"px onmouseover=mmenu_over(mmenudiv"+x+
                     	","+x+") onmouseout=mmenu_out("+x+
                     	") onmousedown=mmenu_down(mmenudiv"+x+","+x+")";
                     	      if(thismenu.command!=""){
                     	          stringx += " onmouseup=mmenu_up();mexec2("+x+");";
                     	      }else{
                     	      	  stringx += " onmouseup=mmenu_up()";
                     	      }
                     	      if(thismenu.pos=="0"){
                     	          stringx += " align=center><img align=absmiddle src='"+thismenu.img+"'"+imgsize+">"+ifspace+thismenu.caption+"</td>";	
                     	      }else if(thismenu.pos=="1"){
                     	          stringx += " align=center>"+thismenu.caption+ifspace+"<img align=absmiddle src='"+thismenu.img+"'"+imgsize+"></td>";	
                     	      }else if(thismenu.pos=="2"){
                     	          stringx += " align=center background='"+thismenu.img+"'>&nbsp;"+thismenu.caption+"&nbsp;</td>";	
                     	      }else{
                     	          stringx += " align=center>&nbsp;"+thismenu.caption+"&nbsp;</td>";
                     	      }
                     	stringx += "";
                     }
                     stringx+="<td width=*>&nbsp;</td></tr></table>";
                     
                     
                     for(var x=0;x<mmenus.length;x++){
                     	thismenu=mmenus[x];
                        if(x==4){
                        stringx+='<div id=mmenudiv'+x+' style="visiable:none"></div>';
                        }else{
                        stringx+='<div id=mmenudiv'+x+
                        ' style="cursor:'+mcursor+';position:absolute;'+
                        'width:'+mmenuitemwidth+'px; z-index:'+(x+100);
                        if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
                        stringx+=';border-left: 1px solid '+mmidoutcolor+
                        ';border-top: 1px solid '+mmidoutcolor;}
                        stringx+=';border-right: 1px solid '+mmenuinbordercolor+
                        ';border-bottom: 1px solid '+mmenuinbordercolor+';visibility:hidden" onselectstart="event.returnValue=false">\n'+
                     	'<table  width="100%" border="0" height="100%" align="center" cellpadding="0" cellspacing="2" '+
                     	'style="'+mfonts+' border-left: 1px solid '+mmenuoutbordercolor;
                        if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
                     	stringx+=';border-right: 1px solid '+mmidincolor+
                     	';border-bottom: 1px solid '+mmidincolor;}
                     	stringx+=';border-top: 1px solid '+mmenuoutbordercolor+
                     	';padding: 4px" bgcolor='+mmenucolor+'>\n'
                     	for(var i=0;i<thismenu.items.length;i++){
                     		var thismenuitem=thismenu.items[i];
                     		var imgsize="";
                     	        if(thismenuitem.sizex!="0"||thismenuitem.sizey!="0")imgsize=" width="+thismenuitem.sizex+" height="+thismenuitem.sizey;
                     	        var ifspace="";
                     	        if(thismenu.caption!="")ifspace="&nbsp;";
                     		if(!thismenuitem.isline){
                     		stringx += "<tr><td class=coolButton style='border: "+mitemedge+"px solid "+mmenucolor+
                     		"' width=100% height=15px onmouseover=\"mmenuitem_over("+x+","+i+
                     		");\" onmouseout=mmenuitem_out() onmousedown=mmenuitem_down() onmouseup=";
 				stringx += "mmenuitem_up();mexec("+x+","+i+"); ";
 				if(thismenuitem.pos=="0"){
                     	            stringx += "><img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+">"+ifspace+thismenuitem.caption+"</td></tr>";	
                     	          }else if(thismenuitem.pos=="1"){
                     	            stringx += ">"+thismenuitem.caption+ifspace+"<img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+"></td></tr>";	
                     	          }else if(thismenuitem.pos=="2"){
                     	            stringx += "background='"+thismenuitem.img+"'>"+thismenuitem.caption+"</td></tr>";	
                     	          }else{
                     	            stringx += ">"+thismenuitem.caption+"</td></tr>";
                     	          }
 				}else{
                     		stringx+='<tr><td height="1" background="hr.gif" onmousemove="clearTimeout(mpopTimer);"><img height="1" width="1" src="none.gif" border="0"></td></tr>\n';
                     		}
                     	}stringx+='</table>\n</div>'
                     	}
                     	
                }
                
                     document.write("<div align='left'>"+stringx+"</div>");
}
function mcheckLocation(){
if(isNaN(mmenuwidth))mmenuwidth=document.body.clientWidth*parseInt(mmenuwidth.substring(0,3))/100;ym=eval(document.body.scrollTop)+document.body.clientHeight-mmenuheight-10;xm=eval(document.body.scrollLeft)+10;y=mmenutable.style.pixelTop;x=mmenutable.style.pixelLeft;if(Math.abs(ym-y)>1)mmenutable.style.pixelTop=y+=(ym-y)/5;else mmenutable.style.pixelTop=y=ym;if(Math.abs(xm-x)>1)mmenutable.style.pixelLeft=x+=(xm-x)/5;else mmenutable.style.pixelLeft=x=xm;setTimeout("mcheckLocation()",10);}

mpmenu1=new mMenu('File','','self','','','','');
mpmenu1.addItem(new mMenuItem('New','javascript:alert(\\"New\\")','self',false,'New','','','',''));
mpmenu1.addItem(new mMenuItem('Open','javascript:alert(\\"Open\\")','self',false,'Open','','','',''));
mpmenu1.addItem(new mMenuItem('Save','javascript:alert(\\"Save\\")','self',false,'Save','','','',''));
mpmenu1.addItem(new mMenuItem(null,null,null,true));
mpmenu1.addItem(new mMenuItem('Exit','javascript:alert(\\"Exit\\")','self',false,'Exit','','','',''));
mpmenu2=new mMenu('Edit','','self','','','','');
mpmenu2.addItem(new mMenuItem('Undo','javascript:alert(\\"Undo\\")','self',false,'Undo','','','',''));
mpmenu2.addItem(new mMenuItem('Forward','javascript:alert(\\"Forward\\")','self',false,'Forward','','','',''));
mpmenu2.addItem(new mMenuItem(null,null,null,true));
mpmenu2.addItem(new mMenuItem('Copy','javascript:alert(\\"Copy\\")','self',false,'Copy','','','',''));
mpmenu2.addItem(new mMenuItem('Paste','javascript:alert(\\"Paste\\")','self',false,'Paste','','','',''));
mpmenu3=new mMenu('Favorites','','self','','','','');
mpmenu3.addItem(new mMenuItem('My&nbsp;Homepage','http://www.KnifeSoft.com','blank',false,'Visit My Homepage','','','',''));
mpmenu3.addItem(new mMenuItem('Yahoo','http://www.yahoo.com','blank',false,'Visit Yahoo','','','',''));
mpmenu4=new mMenu('Help','','self','','','','');
mpmenu4.addItem(new mMenuItem('Contect','javascript:alert(\\"Contect\\")','self',false,'Contect','','','',''));
mpmenu4.addItem(new mMenuItem('Send&nbsp;me&nbsp;an&nbsp;email','mailto:support@knifesoft.com','self',false,'Send me an email.','','','',''));
mpmenu4.addItem(new mMenuItem(null,null,null,true));
mpmenu4.addItem(new mMenuItem('About','javascript:alert(\\"About\\")','self',false,'About WebMenuShop','','','',''));
mpmenu4=new mMenu('KnifeSoft','http://www.knifesoft.com','self','','','','');
mwritetodocument();
mcheckLocation();
</script>

<br><br><br><br><br><br><br><br><br><br><br><br><br>
<SELECT onchange="window.open(this.value,'','')"> <OPTION>产品快速导航</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=1&amp;CateId=1 selected>多媒体产品</OPTION> <OPTION value=http://www.tcl.com/03product/tv/chanpin-hid.htm>&nbsp;&nbsp;DLP数字光显背投</OPTION> <OPTION value=http://www.tclking.com>&nbsp;&nbsp;LCD液晶电视</OPTION> <OPTION value=http://www.tcl.com/03product/tv/chanpin-hid.htm>&nbsp;&nbsp;数字高清背投</OPTION> <OPTION value=http://www.tcl.com/03product/tv/chanpin-pdp.htm>&nbsp;&nbsp;PDP等离子电视</OPTION> <OPTION value=http://www.tcl.com/03product/tv/chanpin-crt.htm>&nbsp;&nbsp;CRT高清彩电</OPTION> <OPTION value=03product/pro2.jsp?cateID=1&amp;CateId=61>&nbsp;&nbsp;酒店电视</OPTION> <OPTION value=03product/pro2.jsp?cateID=1&amp;CateId=141>&nbsp;&nbsp;乐华彩电</OPTION> <OPTION value=http://av.tcl.com/03products/List.asp?ListID=246>&nbsp;&nbsp;视盘机</OPTION> <OPTION value=http://www.tcl.com/03product/mon/index.html>&nbsp;&nbsp;监视器</OPTION> <OPTION value=http://www.tcl.com/03product/vw/index.html>&nbsp;&nbsp;电视墙</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=11&amp;CateId=1>通讯产品</OPTION> <OPTION value=http://www.tclmobile.com.cn/mobile/product.jsp?catid=77>&nbsp;&nbsp;手机</OPTION> <OPTION value=03product/pro2.jsp?cateID=11&amp;CateId=18>&nbsp;&nbsp;电话机</OPTION> <OPTION value=03product/pro2.jsp?cateID=11&amp;CateId=19>&nbsp;&nbsp;网络设备</OPTION> <OPTION value=03product/pro2.jsp?cateID=11&amp;CateId=293>&nbsp;&nbsp;宽带产品</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=12&amp;CateId=1>数码产品</OPTION> <OPTION value=http://www.tcl-digital.com/product/family.asp>&nbsp;&nbsp;家用电脑</OPTION> <OPTION value=http://www.tcl-digital.com/product/business.asp>&nbsp;&nbsp;商用电脑</OPTION> <OPTION value=http://www.tcl-digital.com/product/notebook.asp>&nbsp;&nbsp;笔记本电脑</OPTION> <OPTION value=http://www.tcl-digital.com/product/digital.asp>&nbsp;&nbsp;DV产品</OPTION> <OPTION value=http://www.tcl-digital.com/product/digital.asp?Cateid=82>&nbsp;&nbsp;MP3播放器</OPTION> <OPTION value=http://www.go-video.com.cn/html/productshow.asp?sortid=25&amp;sortid2=7>&nbsp;&nbsp;MP4播放器</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=13&amp;CateId=1>家电产品</OPTION> <OPTION value=03product/pro2.jsp?cateID=13&amp;CateId=25>&nbsp;&nbsp;电冰箱</OPTION> <OPTION value=03product/pro2.jsp?cateID=13&amp;CateId=26>&nbsp;&nbsp;洗衣机</OPTION> <OPTION value=http://www.tclac.com/tclaccn/product/product.aspx>&nbsp;&nbsp;空调</OPTION> <OPTION value=http://www.tclac.com/tclaccn/product/productlist6.aspx>&nbsp;&nbsp;中央空调</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist1.aspx>&nbsp;&nbsp;电饭煲</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist2.aspx>&nbsp;&nbsp;电磁炉</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist3.aspx>&nbsp;&nbsp;电风扇</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist4.aspx>&nbsp;&nbsp;饮水机</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist5.aspx>&nbsp;&nbsp;电暖器</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist6.aspx>&nbsp;&nbsp;净水器</OPTION> <OPTION value=http://www.nanhaitcl.com/product/productlist7.aspx>&nbsp;&nbsp;烧烤炉</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=14&amp;CateId=1>电气产品</OPTION> <OPTION value=http://www.tcl-elc.com/main/gb/product/index.jsp>&nbsp;&nbsp;开关插座</OPTION> <OPTION value=http://www.tcl-lighting.com/products.asp>&nbsp;&nbsp;照明产品</OPTION> <OPTION value=http://www.tclelec.com/product/product_ljfl.htm>&nbsp;&nbsp;工业电器</OPTION> <OPTION value=03product/pro2.jsp?cateID=14&amp;CateId=161>&nbsp;&nbsp;智能楼宇</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=15&amp;CateId=1>部品产品</OPTION> <OPTION value=http://www.asic.com.cn/cn/product.htm>&nbsp;&nbsp;集成电路</OPTION> <OPTION value=http://www.tclrf.com/products/index.html>&nbsp;&nbsp;高频头</OPTION> <OPTION value=http://www.tclbattery.com/china/product01.asp>&nbsp;&nbsp;电池</OPTION> <OPTION style="BACKGROUND: #999; COLOR: #fff" value=03product/pro2.jsp?cateID=16&amp;CateId=1>文化产品</OPTION> <OPTION value=http://www.meikamusic.com/>&nbsp;&nbsp;美卡音像</OPTION> <OPTION value=http://www.tcl-disc.com/tp.htm>&nbsp;&nbsp;TCL光盘</OPTION></SELECT>

提示：您可以先修改部分代码再运行

后来发展到其文字内容可以增、删、编、改，即可以编辑：

<html>

<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>EditSelect</title>
<script>
function isIE(){
a=navigator.appVersion.split(";")
b=a[1].split(" ")
return parseFloat(b[2])
}

if (isIE()<5.5) 
{
     scHTML='<div id="selectcontent" class="selectdiv" style="visibility:hidden;"><div id="selecthtml" class="selectcontent">selectáD表</div></div>'
}
else
{
     scHTML='<div id="selectcontent" class="selectdiv" style="visibility:hidden;"><iframe id=selframe frameborder=0 height=100%></iframe><div id="selecthtml" class="selectcontent">selectáD表</div></div>'
}

document.write(scHTML)
vDiv=selectcontent
vDivHtml=selecthtml

var redge=document.body.clientWidth-vleft
   var bedge=document.body.clientHeight-vtop

if (!combo.width) {vDiv.style.width=pTable.offsetWidth} else {vDiv.style.width=combo.width}

if (combo.height==0)
      {
        vDiv.style.pixelHeight=parseInt(htmltable.offsetHeight)+2
        vDivHtml.style.pixelHeight=parseInt(htmltable.offsetHeight)+2
      }
      else
      {
         if (htmltable.offsetHeight>combo.height)
          {
            vDiv.style.pixelHeight=combo.height
            vDivHtml.style.pixelHeight=combo.height

} 
           else 
           {
          
              vDiv.style.pixelHeight=parseInt(htmltable.offsetHeight)+2
              vDivHtml.style.pixelHeight=parseInt(htmltable.offsetHeight)+2
           }
   
       }
    
    vDivHtml.scrollTop=0
    
    if (redge<vDiv.offsetWidth)
      vDiv.style.left=vleft-1-(vDiv.offsetWidth-redge)
        else
      vDiv.style.left=vleft-1

if (bedge<vDiv.offsetHeight)
    //vDiv.style.top=vtop-vDiv.offsetHeight-pDiv.offsetHeight
    vDiv.style.top=vtop-vDiv.offsetHeight+bedge
         else
      vDiv.style.top=vtop
      
    
    vDivHtml.style.width=parseInt(vDiv.style.width)
      vDiv.style.visibility="visible"
  }
  
  this.add=function(text,js){
     combo.options[combo.options.length]=text
     combo.oj[combo.oj.length]=js

}
  
  this.clearall=function(){
  combo.options=new Array()
  }

this.about=function(){
  
 }
}

function mo(obj){
obj.style.backgroundColor="#000099"
obj.style.color="#ffffff"
}

function mu(obj){
obj.style.backgroundColor=""
obj.style.color="#000000"
}

document.onmousedown=function(){
if (vDiv.style.visibility=="visible"){
mx=event.x + document.body.scrollLeft
my=event.y + document.body.scrollTop;

x1=vDiv.offsetLeft
y1=vDiv.offsetTop

x2=vDiv.offsetLeft+vDiv.offsetWidth
y2=vDiv.offsetTop+vDiv.offsetHeight

if (mx<x1 || my<y1 || x2<mx || y2<my) 
   { 
     vDiv.style.visibility='hidden'
   }
}
}</script>

.selectdiv
{
position: absolute; 
width:100;
overflow:hidden;
}
.select{
border-collapse: collapse;
border:1px solid #7F9DB9
}
</style>
</head>

<table border="0" width="100%">
 <tr>
  <td width="151" align="center"><font size="2">可编辑的Select</font></td>
  <td><script>
var sel1=new editselect("select1","25","可编辑的Select","");
sel1.add("这是一个可以编辑的Select")
sel1.add("支持CSS")
sel1.add("可以通过CSS，修改外形")
sel1.add("突破原来的Select诸多限制")
</script></td>
 </tr>
 <tr>
  <td width="151" align="center"><font size="2">长度可以随意修改
可以设置为只读</font></td>
  <td>
  <script>
var sel2=new editselect("select2","20","长度可以随意修改",250,82,1);
sel2.add("这是一个可以编辑的Select")
sel2.add("支持CSS")
sel2.add("可以通过CSS，修改外形")

sel2.add("作者:舜子制作")
sel2.add("MSN:puterjam@msn.com")
</script>
  </td>
 </tr>
 <tr>
  <td width="151" align="center"><font size="2">可以遮盖系统Select</font></td>
  <td>
  <script>
var sel3=new editselect("select3","25","可以遮盖系统Select","",41);
sel3.add("这是一个可以编辑的Select")
sel3.add("支持CSS")
sel3.add("可以通过CSS，修改外形")
sel3.add("突破原来的Select诸多限制")
</script>
  </td>
 </tr>
 <tr>
  <td width="151" align="right">　</td>
  <td><select><option>系统的Select</option></select>　</td>
 </tr>
</table>
</body>

</html>

提示：您可以先修改部分代码再运行

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