/*Setting the collapse\expand state of the filters.  
		The function is called from each filter object but appears once in the search page*/
		function SwitchStyle(imgObj)
		{
			if (imgObj.title=='Expand') 
			{
				//img.td.tr.tbody.table.siblingTable = children table
				imgObj.parentElement.parentElement.parentElement.parentElement.nextSibling.style.display='';	
				imgObj.title = 'Collapse';
				imgObj.src = './Images/arrow_up.gif';
			}
			else
			{
				//img.td.tr.tbody.table.siblingTable = children table
				imgObj.parentElement.parentElement.parentElement.parentElement.nextSibling.style.display='none';
				imgObj.title = 'Expand';
				imgObj.src = './Images/arrow_down.gif';				
			}
		}