页面自定义拖拽布局

<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<style> 
body {margin:0px;padding:0px;font-size:12px;text-align:center;} 
body > div {text-align:center; margin-right:auto; margin-left:auto;}  
.content{width:900px;} 
.content .left{ 
    float:left; 
    width:20%; 
    border:1px solid #FF0000; 
    margin:3px; 
} 
.content .center{float:left;border:1px solid #FF0000;margin:3px;width:57%} 
.content .right{float:right;width:20%;border:1px solid #FF0000;margin:3px} 
.mo{height:auto;border:1px solid #CCC;margin:3px;background:#FFF} 
.mo h1{background:#ECF9FF;height:18px;padding:3px;cursor:move} 
.mo .nr{height:80px;border:1px solid #F3F3F3;margin:2px} 
h1{margin:0px;padding:0px;text-align:left;font-size:12px} 
</style> 
<script> 
var dragobj={} 
window.onerror=function(){return false} 
function on_ini(){ 
    String.prototype.inc=function(s){return this.indexOf(s)>-1?true:false} 
    var agent=navigator.userAgent 
    window.isOpr=agent.inc("Opera") 
    window.isIE=agent.inc("IE")&&!isOpr 
    window.isMoz=agent.inc("Mozilla")&&!isOpr&&!isIE 
    if(isMoz){ 
        Event.prototype.__defineGetter__("x",function(){return this.clientX+2}) 
        Event.prototype.__defineGetter__("y",function(){return this.clientY+2}) 
    } 
    basic_ini() 
} 
function basic_ini(){ 
    window.$=function(obj){return typeof(obj)=="string"?document.getElementById(obj):obj} 
    window.oDel=function(obj){if($(obj)!=null){$(obj).parentNode.removeChild($(obj))}} 
} 
window.onload=function(){ 
    on_ini() 
    var o=document.getElementsByTagName("h1") 
    for(var i=0;i<o.length;i++){ 
        o[i].onmousedown=function(e){ 
            if(dragobj.o!=null) 
                return false 
            e=e||event 
            dragobj.o=this.parentNode 
            dragobj.xy=getxy(dragobj.o) 
            dragobj.xx=new Array((e.x-dragobj.xy[1]),(e.y-dragobj.xy[0])) 
            dragobj.o.style.width=dragobj.xy[2]+"px" 
            dragobj.o.style.height=dragobj.xy[3]+"px" 
            dragobj.o.style.left=(e.x-dragobj.xx[0])+"px" 
            dragobj.o.style.top=(e.y-dragobj.xx[1])+"px"             
            dragobj.o.style.position="absolute" 
            var om=document.createElement("div") 
            dragobj.otemp=om 
            om.style.width=dragobj.xy[2]+"px" 
            om.style.height=dragobj.xy[3]+"px" 
            dragobj.o.parentNode.insertBefore(om,dragobj.o) 
            return false 
        } 
    } 
} 
document.onselectstart=function(){return false} 
window.onfocus=function(){document.onmouseup()} 
window.onblur=function(){document.onmouseup()} 
document.onmouseup=function(){ 
    if(dragobj.o!=null){ 
        dragobj.o.style.width="auto" 
        dragobj.o.style.height="auto" 
        dragobj.otemp.parentNode.insertBefore(dragobj.o,dragobj.otemp) 
        dragobj.o.style.position="" 
        oDel(dragobj.otemp) 
        dragobj={} 
    } 
} 
document.onmousemove=function(e){ 
    e=e||event 
    if(dragobj.o!=null){ 
        dragobj.o.style.left=(e.x-dragobj.xx[0])+"px" 
        dragobj.o.style.top=(e.y-dragobj.xx[1])+"px" 
        createtmpl(e) 
    } 
} 
function getxy(e){ 
    var a=new Array() 
    var t=e.offsetTop; 
    var l=e.offsetLeft; 
    var w=e.offsetWidth; 
    var h=e.offsetHeight; 
    while(e=e.offsetParent){ 
        t+=e.offsetTop; 
        l+=e.offsetLeft; 
    } 
    a[0]=t;a[1]=l;a[2]=w;a[3]=h 
  return a; 
} 
function inner(o,e){ 
    var a=getxy(o) 
    if(e.x>a[1]&&e.x<(a[1]+a[2])&&e.y>a[0]&&e.y<(a[0]+a[3])){ 
        if(e.y<(a[0]+a[3]/2)) 
            return 1; 
        else 
            return 2; 
    }else 
        return 0; 
} 
function createtmpl(e){ 
    for(var i=0;i<12;i++){ 
        if($("m"+i)==dragobj.o) 
            continue 
        var b=inner($("m"+i),e) 
        if(b==0) 
            continue 
        dragobj.otemp.style.width=$("m"+i).offsetWidth 
        if(b==1){ 
            $("m"+i).parentNode.insertBefore(dragobj.otemp,$("m"+i)) 
        }else{ 
            if($("m"+i).nextSibling==null){ 
                $("m"+i).parentNode.appendChild(dragobj.otemp) 
            }else{ 
                $("m"+i).parentNode.insertBefore(dragobj.otemp,$("m"+i).nextSibling) 
            } 
        } 
        return 
    } 
    for(var j=0;j<3;j++){ 
        if($("dom"+j).innerHTML.inc("div")||$("dom"+j).innerHTML.inc("DIV")) 
            continue 
        var op=getxy($("dom"+j)) 
        if(e.x>(op[1]+10)&&e.x<(op[1]+op[2]-10)){ 
            $("dom"+j).appendChild(dragobj.otemp) 
            dragobj.otemp.style.width=(op[2]-10)+"px" 
        } 
    } 
} 
</script> 
</head> 
<body> 
 
     
         
            <h1>dom0</h1> 
             
         
         
            <h1>dom1</h1> 
         
        <h1>dom2</h1> 
        <h1>dom3</h1> 
     
     
        <h1>dom4</h1> 
        <h1>dom5</h1> 
        <h1>dom6</h1> 
        <h1>dom7</h1> 
     
     
        <h1>dom8</h1> 
        <h1>dom9</h1> 
        <h1>dom10</h1> 
        <h1>dom11</h1> 
     
 
</body> 
</html>

[Ctrl+A 全选注:如需引入外部Js需刷新才能执行]