/**
 * Return absolute Y coor of specified element.
 * @param object oElement
 * @return integer
 */
function DOM_getY(oElement) {
	var iReturnValue = 0;
	while(oElement != null) {
		iReturnValue += oElement.offsetTop;
		oElement = oElement.offsetParent;
	}
	return iReturnValue;
}

/**
  * Another Version of to find the y coorinate of the object
  * @param object oElement
  * @return integer
  * @source : http://blog.firetree.net/2005/07/04/javascript-find-position/
  */
function findPosY(oElement)
{
	var intReturn = 0;
	if(typeof(oElement) != 'undefined')
	{
		 if(oElement.offsetParent)
		 {
			  while(1)
			  {
				 intReturn += oElement.offsetTop;
				 if(!oElement.offsetParent)
					break;
				 oElement = oElement.offsetParent;
			  }
		 }
		 else if(oElement.y)
			  intReturn += oElement.y;
	}
	return intReturn;
}