function switchStyle(LinkID,ItemID)
{
	var ul;
	var theImage;
	
	ul = document.getElementById(ItemID);
	theImage = document.getElementById(LinkID);
	
	if(ul != null)
	{
		if(ul.style.display == "")
		{
			ul.style.display="none";
			theImage.src="/siteimages/filter_expand.gif";	
		}else{
			ul.style.display="";
			theImage.src="/siteimages/filter_contract.gif";
		}
	}
}