function getElementPos(elementId) {
 var ua = navigator.userAgent.toLowerCase();
 var isOpera = (ua.indexOf('opera') != -1);
 var isIE = (ua.indexOf('msie') != -1 && !isOpera); // not opera spoof
 var el = document.getElementById(elementId);
 if(el.parentNode === null || el.style.display == 'none')
 {
   return false;
 }
 var parent = null;
 var pos = [];
 var box;
 if(el.getBoundingClientRect) //IE
 {
   box = el.getBoundingClientRect();
   var scrollTop = Math.max(document.documentElement.scrollTop, document.body.scrollTop);
   var scrollLeft = Math.max(document.documentElement.scrollLeft, document.body.scrollLeft);return {x:box.left + scrollLeft, y:box.top + scrollTop};
 }
 else if(document.getBoxObjectFor) // gecko
 {
   box = document.getBoxObjectFor(el);

   var borderLeft = (el.style.borderLeftWidth)?parseInt(el.style.borderLeftWidth):0;
   var borderTop = (el.style.borderTopWidth)?parseInt(el.style.borderTopWidth):0;
   pos = [box.x - borderLeft, box.y - borderTop];
 }
 else // safari & opera
 {
   pos = [el.offsetLeft, el.offsetTop];
   parent = el.offsetParent;
   if (parent != el) {
     while (parent) {
       pos[0] += parent.offsetLeft;
       pos[1] += parent.offsetTop;
       parent = parent.offsetParent;
     }
   }
   if (ua.indexOf('opera') != -1|| ( ua.indexOf('safari') != -1 && el.style.position == 'absolute' ))
   {
     pos[0] -= document.body.offsetLeft;
     pos[1] -= document.body.offsetTop;
   }
 }

 if (el.parentNode) {
   parent = el.parentNode;
 }else {
   parent = null;
 }
 while (parent && parent.tagName != 'BODY' && parent.tagName != 'HTML')
 { // account for any scrolled ancestors
   pos[0] -= parent.scrollLeft;
   pos[1] -= parent.scrollTop;

   if (parent.parentNode){
     parent = parent.parentNode;
   }
   else{
     parent = null;
   }
 }
 return {x:pos[0], y:pos[1]};
}