@@@@@用DIV仿制模式对话框的问题@@@@@

以前网上搜的，忘了地址了：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"><head>
<style type="text/css">#id1{width:100%;height:100%;background-color:#000;position:absolute;top:0;left:0;z-index:49;display:none;}
#id2{top:200px;position:absolute;z-index:50;display:none;border:3px solid #E5E5E5; left:100px;background-color:white;}
</style>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>asfsdfasdfasdf</title>
<script language="javascript" type="text/javascript">
function show(){
id1.style.height=window.screen.height+"px";
id1.style.width=window.screen.width+"px";
id1.style.display='block';
id2.style.display='block'
}
function hide(){
id1.style.display='none'
id2.style.display='none'
}
self.onError=null;
currentX = currentY = 0;
whichIt = null;
lastScrollX = 0; lastScrollY = 0;
NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;

function heartBeat() {
if(IE) { diffY = document.body.scrollTop; diffX = document.body.scrollLeft; }                             if(NS) { diffY = self.pageYOffset; diffX = self.pageXOffset; }
if(diffY != lastScrollY) {
percent = .1 * (diffY - lastScrollY);
if(percent > 0) percent = Math.ceil(percent);
else percent = Math.floor(percent);
if(IE) document.all.id2.style.pixelTop += percent;
if(NS) document.id2.top += percent;
lastScrollY = lastScrollY + percent;
}
if(diffX != lastScrollX) {
percent = .1 * (diffX - lastScrollX);
if(percent > 0) percent = Math.ceil(percent);
else percent = Math.floor(percent);
if(IE) document.all.id2.style.pixelLeft += percent;
if(NS) document.id2.left += percent;
lastScrollX = lastScrollX + percent;
}
}


function checkFocus(x,y) {
stalkerx = document.id2.pageX;
stalkery = document.id2.pageY;
stalkerwidth = document.id2.clip.width;
stalkerheight = document.id2.clip.height;
if( (x > stalkerx && x < (stalkerx+stalkerwidth)) && (y > stalkery && y < (stalkery+stalkerheight))) return true;
else return false;
}
function grabIt(e) {
if(IE) {
whichIt = event.srcElement;
while (whichIt.id.indexOf("id2") == -1) {
whichIt = whichIt.parentElement;
if (whichIt == null) { return true; }
}
whichIt.style.pixelLeft = whichIt.offsetLeft;
whichIt.style.pixelTop = whichIt.offsetTop;
currentX = (event.clientX + document.body.scrollLeft);
currentY = (event.clientY + document.body.scrollTop);
} else {
window.captureEvents(Event.MOUSEMOVE);
if(checkFocus (e.pageX,e.pageY)) {
whichIt = document.id2;
stalkerTouchedX = e.pageX-document.id2.pageX;
StalkerTouchedY = e.pageY-document.id2.pageY;
}
}
return true;
}
function moveIt(e) {
if (whichIt == null) { return false; }
if(IE) {
newX = (event.clientX + document.body.scrollLeft);
newY = (event.clientY + document.body.scrollTop);
distanceX = (newX - currentX);    distanceY = (newY - currentY);
currentX = newX;    currentY = newY;
whichIt.style.pixelLeft += distanceX;
whichIt.style.pixelTop += distanceY;
if(whichIt.style.pixelTop < document.body.scrollTop) whichIt.style.pixelTop = document.body.scrollTop;    if(whichIt.style.pixelLeft < document.body.scrollLeft) whichIt.style.pixelLeft = document.body.scrollLeft; if(whichIt.style.pixelLeft > document.body.offsetWidth - document.body.scrollLeft - whichIt.style.pixelWidth - 20) whichIt.style.pixelLeft = document.body.offsetWidth - whichIt.style.pixelWidth - 20;
if(whichIt.style.pixelTop > document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5) whichIt.style.pixelTop = document.body.offsetHeight + document.body.scrollTop - whichIt.style.pixelHeight - 5;
event.returnValue = false;
} else {
whichIt.moveTo(e.pageX-StalkerTouchedX,e.pageY-StalkerTouchedY);
if(whichIt.left < 0+self.pageXOffset) whichIt.left = 0+self.pageXOffset;
if(whichIt.top < 0+self.pageYOffset) whichIt.top = 0+self.pageYOffset;
if( (whichIt.left + whichIt.clip.width) >= (window.innerWidth+self.pageXOffset-17)) whichIt.left = ((window.innerWidth+self.pageXOffset)-whichIt.clip.width)-17;
if( (whichIt.top + whichIt.clip.height) >= (window.innerHeight+self.pageYOffset-17)) whichIt.top = ((window.innerHeight+self.pageYOffset)-whichIt.clip.height)-17;
return false;}
return false;
}
function dropIt() {
whichIt = null;
if(NS) window.releaseEvents (Event.MOUSEMOVE);
return true;
}

if(NS) {
window.captureEvents(Event.MOUSEUP|Event.MOUSEDOWN);
window.onmousedown = grabIt;
window.onmousemove = moveIt;
window.onmouseup = dropIt;
}
if(IE) {
document.onmousedown = grabIt;
document.onmousemove = moveIt;
document.onmouseup = dropIt;
}
if(NS || IE) action = window.setInterval("heartBeat()",1)</script>
</head><body>
<p> </p>
<div id="id2">
这里可以放内容，或者添加div用innerhtml进行添加内容就可以了
<br/><input name="Button1" type="button" value="button" onclick="hide()"/>
</div>
<div id="id1"> 123</div>

<form method="post">
<input name="Button2" type="button" value="button" onclick="show()"/></form>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
<p> </p>
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<p> </p>
<p> </p>
</body></html>

哦，找到了，是IE7之前select 比 div级别高的原因，谢谢。http://www.javanb.com/javascript/1/15693.html
JS版常见问题(一)层遇到select框时

原来是SELECT的问题呀，我这里有个例子：<script language="javascript">// 隐藏被ID为objID的对象（层）遮挡的所有select
function HideOverSels(objID)
{
    var sels = document.getElementsByTagName('select');
    for (var i = 0; i < sels.length; i++)
      if (Obj1OverObj2(document.all[objID], sels[i]))
        sels[i].style.visibility = 'hidden';
}//判断obj1是否遮挡了obj2
function Obj1OverObj2(obj1, obj2)
{
  var pos1 = getPosition(obj1)
  var pos2 = getPosition(obj2)
  var result = true;
  var obj1Left = pos1.left - window.document.body.scrollLeft;
  var obj1Top = pos1.top - window.document.body.scrollTop;
  var obj1Right = obj1Left + obj1.offsetWidth;
  var obj1Bottom = obj1Top + obj1.offsetHeight;
  var obj2Left = pos2.left - window.document.body.scrollLeft;
  var obj2Top = pos2.top - window.document.body.scrollTop;
  var obj2Right = obj2Left + obj2.offsetWidth;
  var obj2Bottom = obj2Top + obj2.offsetHeight;

  if (obj1Right <= obj2Left || obj1Bottom <= obj2Top ||
      obj1Left >= obj2Right || obj1Top >= obj2Bottom)
    result = false;
  return result;
}// 获取对象的坐标
function getPosition(Obj)
{
for (var sumTop=0,sumLeft=0;Obj!=window.document.body;sumTop+=Obj.offsetTop,sumLeft+=Obj.offsetLeft, Obj=Obj.offsetParent);
return {left:sumLeft,top:sumTop}
}
</script><script>
    window.onload = function(){HideOverSels("div1")}
</script><div style="position: absolute;left:10px;top:20px;width:200px;height:200px;border:1px solid red;" id="div1">
看看这个层下面的select是不是都隐藏了：）
</div>
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />
<select name="">
<option>test1</option>
<option>test2</option>
<option>test3</option>
</select>
<P />

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调试易

@@@@@用DIV仿制模式对话框的问题@@@@@

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