div layout. 可以拖拽的DIV布局实现

 div layout sample.support drag.

< 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 >
< div  class =content >
  < div  class =left  id =dom0 >
   < div  class =mo  id =m0 >
    < h1 > dom0 </ h1 >
    < div  class ="nr" ></ div >
   </ div >
   < div  class =mo  id =m1 >
    < h1 > dom1 </ h1 >< div  class ="nr" ></ div >
   </ div >
   < div  class =mo  id =m2 >< h1 > dom2 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m3 >< h1 > dom3 </ h1 >< div  class ="nr" ></ div ></ div >
  </ div >
  < div  class =center  id =dom1 >
   < div  class =mo  id =m4 >< h1 > dom4 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m5 >< h1 > dom5 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m6 >< h1 > dom6 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m7 >< h1 > dom7 </ h1 >< div  class ="nr" ></ div ></ div >
  </ div >
  < div  class =right  id =dom2 >
   < div  class =mo  id =m8 >< h1 > dom8 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m9 >< h1 > dom9 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m10 >< h1 > dom10 </ h1 >< div  class ="nr" ></ div ></ div >
   < div  class =mo  id =m11 >< h1 > dom11 </ h1 >< div  class ="nr" ></ div ></ div >
  </ div >
</ div >
</ body >
</ html >