floating div not working in IE

[ThunderAI]

This code works in Firefox and Chrome but does not work in IE.  It will scroll verticle with the page but as the page scrolls horizontal the floating div will not.

 

function zxcWWHS(){
if (document.all){
  zxcCur='hand';
  zxcWH=document.documentElement.clientHeight;
  zxcWW=document.documentElement.clientWidth;
  zxcWS=document.documentElement.scrollTop;
  if (zxcWH==0){
   zxcWS=document.body.scrollTop;
   zxcWH=document.body.clientHeight;
   zxcWW=document.body.clientWidth;
  }
}
else if (document.getElementById){
  zxcCur='pointer';
  zxcWH=window.innerHeight-15;
  zxcWW=window.innerWidth-15;
  zxcWS=window.pageYOffset;
}
zxcWC=Math.round(zxcWW/2);
return [zxcWW,zxcWH,zxcWS];
}


window.onscroll=function(){
var img=document.getElementById('fred');
if (!document.all){ img.style.position='fixed'; window.onscroll=null; return; }
if (!img.pos){ img.pos=img.offsetTop; }
img.style.top=(zxcWWHS()[2]+img.pos)+'px';

}

[Adam]

You're not setting the left CSS property.

[ThunderAI]

You're not setting the left CSS property.

 

How would I do that?