鼠标可拖动的浮动层效果

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C C++C#JavaScript prototype

一共三个层,下面还有一个,把他拖上来,按下文字和button是不可以拖动的//一共三个层,下面还有一个,把他拖上来,按下文字和button是不可以拖动的//一共三个层,下面还有一个,把他拖上来,按下文字和button是不可以拖动的.
以下是HTML网页特效代码，点击运行按钮可查看效果：
<!DOCTYPEHTMLPUBLIC"-//W3C//DTDHTML4.01Transitional//EN""http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<metahttp-equiv="Content-Type"content="text/html;charset=utf-8">
<title>zhou'shtml</title>
</head>
<body>
一共三个层,下面还有一个,把他拖上来,按下文字和button是不可以拖动的//一共三个层,下面还有一个,把他拖上来,按下文字和button是不可以拖动的//一共三个层,下面还有一个,把他拖上来,按下文字和button是不可以拖动的
<divid="test"style='border:6pxsolid#000000;left:1px;top:2px;width:100px;height:100px;background-color:#F9F7ED;position:absolute;text-align:center'><span>MagnoliaMag.nolia</span><inputtype="text"style="width:50px"maxlength="5"/></div>

<divid="test1"style='border:6pxsolid#000000;left:1px;top:200px;width:150px;height:150px;background-color:#FF1A00;position:absolute;text-align:center'><span>MozillaRed</span><br/><inputtype="text"style="width:80px"maxlength="9"/></div>

<divid="test2"style='border:6pxsolid#000000;left:200px;top:800px;width:100px;height:100px;background-color:#EEEEEE;position:absolute;text-align:center'><span>Shinysilver</span><br/><inputtype="button"value="hitme"/></div>

<br/><br/><br/><br/><br/><br/><br/><br/><br/>
<scripttype="text/javascript"charset="utf-8">
var$=function(id){returndocument.getElementById(id)};
Array.prototype.extend=function(C){for(varB=0,A=C.length;B<A;B++){this.push(C[B]);}returnthis;}
functiondivDrag(){
varA,B;
varzIndex=1;
this.dragStart=function(e){
e=e||window.event;
if((e.which&&(e.which!=1))||(e.button&&(e.button!=1)))return;
varpos=this.$pos;
if(document.defaultView){
_top=document.defaultView.getComputedStyle(this,null).getPropertyValue("top");
_left=document.defaultView.getComputedStyle(this,null).getPropertyValue("left");}
else{
if(this.currentStyle){_top=this.currentStyle["top"];_left=this.currentStyle["left"];}
}
pos.ox=(e.pageX||(e.clientX+document.documentElement.scrollLeft))-parseInt(_left);
pos.oy=(e.pageY||(e.clientY+document.documentElement.scrollTop))-parseInt(_top);
if(!!A){
if(document.removeEventListener){
document.removeEventListener("mousemove",A,false);
document.removeEventListener("mouseup",B,false);
}else{
document.detachEvent("onmousemove",A);
document.detachEvent("onmouseup",B);
document.detachEvent("ondragstart",G);
}
}
A=this.dragMove.create(this);
B=this.dragEnd.create(this);
if(document.addEventListener){
document.addEventListener("mousemove",A,false);
document.addEventListener("mouseup",B,false);
}else{
document.attachEvent("onmousemove",A);
document.attachEvent("onmouseup",B);
G=function(){returnfalse};
document.attachEvent("ondragstart",G);
}
this.style.zIndex=(++zIndex);
this.stop(e);
}
this.dragMove=function(e){
e=e||window.event;
varpos=this.$pos;
this.style.top=(e.pageY||(e.clientY+document.documentElement.scrollTop))-parseInt(pos.oy)+'px';
this.style.left=(e.pageX||(e.clientX+document.documentElement.scrollLeft))-parseInt(pos.ox)+'px';
this.stop(e);}
this.dragEnd=function(e){
varpos=this.$pos;
e=e||window.event;

if((e.which&&(e.which!=1))||(e.button&&(e.button!=1)))return;
if(document.removeEventListener){
document.removeEventListener("mousemove",A,false);
document.removeEventListener("mouseup",B,false);
}else{
document.detachEvent("onmousemove",A);
document.detachEvent("onmouseup",B);
document.detachEvent("ondragstart",G);
}
A=null;
B=null;
this.style.zIndex=(++zIndex);
this.stop(e);
}
this.position=function(e){
vart=e.offsetTop;
varl=e.offsetLeft;
while(e=e.offsetParent){
t+=e.offsetTop;
l+=e.offsetLeft;
}
return{x:l,y:t,ox:0,oy:0}
}
this.stop=function(e){
if(e.stopPropagation){
e.stopPropagation();
}else{
e.cancelBubble=true;}

if(e.preventDefault){
e.preventDefault();}
else{e.returnValue=false;}
}
this.stop1=function(e){
e=e||window.event;
if(e.stopPropagation){
e.stopPropagation();
}else{
e.cancelBubble=true;}

}
this.create=function(bind){
varB=this;
varA=bind;
returnfunction(e){
returnB.apply(A,[e]);
}
}
this.dragStart.create=this.create;
this.dragMove.create=this.create;
this.dragEnd.create=this.create;

this.initialize=function(){
for(varA=0,B=arguments.length;A<B;A++){
C=arguments[A];
C=(typeof(C)=='object')?C:(typeof(C)=='string'?$(C):null);
if(!C)continue;
C.$pos=this.position(C);
C.dragMove=this.dragMove;
C.dragEnd=this.dragEnd;
C.position=this.position;
C.stop=this.stop;
var$A=[];
$A=$A.extend(C.getElementsByTagName('span')||[]).extend(C.getElementsByTagName('input')||[]);
for(varD=0,E=$A.length;D<E;D++){
if(C.addEventListener){
$A[D].addEventListener("mousedown",this.stop1,false);
$A[D].addEventListener("mousemove",this.stop1,false);
}else{
$A[D].attachEvent("onmousedown",this.stop1);
$A[D].attachEvent("onmousemove",this.stop1);
}
}
if(C.addEventListener){
C.addEventListener("mousedown",this.dragStart.create(C),false);
}else{
C.attachEvent("onmousedown",this.dragStart.create(C));
}
}

}
this.initialize.apply(this,arguments);

}
//生成拖动层很简单
newdivDrag('test',$('test1'),$('test2'));
</script>
</body>
</html>

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