var root;
var element;
var xPos;
var yPos;

function document_onload()
{
   if(navigator.userAgent.indexOf('MSIE') > -1)
   {
      root = (document.documentElement != null) ? document.documentElement : document.body;
      element = document.getElementById('myFloat');
      element.style.position = 'absolute';
 
      xPos = element.offsetLeft - root.scrollLeft;
      yPos = element.offsetTop - root.scrollTop;
 
      window.onscroll = window_onscroll;
   }
}
 
function window_onscroll()
{   
   element.style.left = (root.scrollLeft + xPos).toString() + 'px';
   element.style.top = (root.scrollTop + yPos).toString() + 'px';
}

function popup(url) 
{
 params  = 'width='+screen.width;
 params += ', height='+screen.height;
 params += ', top=0, left=0'
 params += ', fullscreen=yes';

 newwin=window.open(url,'windowname4', params);
 if (window.focus) {newwin.focus()}
 return false;
}