problem med IE

Hej eksperter jeg har et problem med IE jeg har en drag and drop code som virker perfect i firefox,safari,chrome,flock og opera men af en eller anden grund kan ie ikke finde af det det eneste der kommer frem e iframen som er inde i drag and drop box'en ?? er den nogen der han se hvor problemmet er !! der kommer ingen fejl meddelser i ie

her er code:

var wi_DragWin={
IE : document.all?true:false,
z: 0,
x: 0,
y: 0,
winX: "20px",
winY: "90px",
offsetx : null,
offsety : null,
targetobj : null,
resizeobj : null,
dragapproved : 0,
wi_Win : null,
Id : "",
type : "",
url : "",
defaultHeight : "",
defaultWidth : "",
iframeId : "",
conId : "",
HideConbox : "",
Resizeapproved : 0,

initialize:function(id,type,url,height,w){
this.Id = id;   
this.iframeId = id + "iframe";
this.type = type;
this.url = url;
this.defaultHeight = height;
this.defaultWidth = w;
this.conId = this.Id + "dragcontent";

document.onmousedown=this.drag;
document.onmouseup=function(){
   
    this.dragapproved=0;
    this.Resizeapproved = 0;
   
    this.HideConbox = document.getElementById(this.targetobj.parentNode.id + "iframe");

    this.HideConbox.style.visibility = 'visible';
   
    wi_Win = document.getElementById(this.targetobj.parentNode.id);
   
    wi_Win.className = "drag";
   
    }

this.setWin();
},

setWin:function(){
var style = "top:"+ this.winY + ";left:" + this.winX + ";width:" + this.defaultWidth + ";height:" + this.defaultHeight + ";";

var div = document.createElement('div');
div.setAttribute( "class", "drag" );
div.setAttribute( "style", style );
div.setAttribute( "id", this.Id );
   
    var div2 = document.createElement('div');
    div2.setAttribute( "class", "drag-handle" );
    div.appendChild(div2);
   
    var div3 = document.createElement('div');
    div3.setAttribute( "class", "drag-content" );
    div3.setAttribute( "style", "display:block;" );
   
   
   
    div3.setAttribute( "id", this.conId );
   
        if(this.type == "ajax"){
           
           
           
            }
       
        if(this.type == "iframe"){
var h = (parseInt(this.defaultHeight)-47) + "px";   
var w = this.defaultWidth;
alert(h + " | " + w);
div3.innerHTML = '<iframe  id="'+ this.iframeId +'" frameborder="0"  style="visibility:visible" top="0px" left="0px" height="'+ h +'" width="'+ w +'" src="'+ this.url +'"></iframe>';
           
            }
   
    div.appendChild(div3);
   
   
    var div4 = document.createElement('div');
    div4.setAttribute( "class", "drag-status" );
    div4.setAttribute( "style", "display:block;" );
   
    var bottomId = this.Id + "bottom"
   
    div4.setAttribute( "id", bottomId );
   
    div4.innerHTML = '<div class="drag-resize"></div>';
   
    div.appendChild(div4);

document.body.appendChild(div);
   
alert(div.innerHTML);
   
   
    },

drag:function(e){


   
var evtobj=window.event? window.event : e
this.targetobj=window.event? event.srcElement : e.target



//check if the clicked div is a dragbar
if (this.targetobj.className=="drag-handle"){
   
//sets the window to drag   
wi_Win = document.getElementById(this.targetobj.parentNode.id);   

//hides the content whill draging
this.HideConbox = document.getElementById(this.targetobj.parentNode.id + "iframe");

this.HideConbox.style.visibility = 'hidden';

wi_Win.className = "dragOn";



//Allows drag
this.dragapproved=1

if (isNaN(parseInt(wi_Win.style.left))){
    wi_Win.style.left=0
    }
   
if (isNaN(parseInt(wi_Win.style.top))){
    wi_Win.style.top=0
    }
   
this.offsetx=parseInt(wi_Win.style.left)
this.offsety=parseInt(wi_Win.style.top)
this.x=evtobj.clientX
this.y=evtobj.clientY
if (evtobj.preventDefault)
evtobj.preventDefault()
document.onmousemove=wi_DragWin.MoveWin
}

//check if the clicked div is a dragbar
if (this.targetobj.className=="drag-resize"){
   
var evtobj=window.event? window.event : e

wi_status = document.getElementById(this.targetobj.parentNode.id);

wi_Win = document.getElementById(wi_status.parentNode.id);   

wi_iframe = document.getElementById(wi_status.parentNode.id + "iframe");

this.Resizeapproved = 1;

if (isNaN(parseInt(wi_Win.style.left))){
    wi_Win.style.left=0
    }
   
if (isNaN(parseInt(wi_Win.style.top))){
    wi_Win.style.top=0
    }
   
this.offsetx=parseInt(wi_Win.style.left)
this.offsety=parseInt(wi_Win.style.top)
this.x=evtobj.clientX
this.y=evtobj.clientY
if (evtobj.preventDefault)
evtobj.preventDefault()

document.onmousemove=wi_DragWin.ResizeWin
}

},

MoveWin:function(e){
var evtobj=window.event? window.event : e
if (this.dragapproved==1){
wi_Win.style.left=this.offsetx+evtobj.clientX-this.x+"px"
wi_Win.style.top=this.offsety+evtobj.clientY-this.y+"px"
return false
}
},

ResizeWin:function(e){
var evtobj=window.event? window.event : e   
if (this.Resizeapproved==1){
   
   
   
    wi_Win.style.height = ((evtobj.clientY+2) - parseInt(wi_Win.style.top)) + "px";
    wi_Win.style.width = ((evtobj.clientX+2) - parseInt(wi_Win.style.left)) + "px";
    wi_iframe.style.height = ((evtobj.clientY-45) - parseInt(wi_Win.style.top)) + "px";
    wi_iframe.style.width = ((evtobj.clientX+2) - parseInt(wi_Win.style.left)) + "px";
return false
   
    }
}

}