function toggleCollapse(ul_id,shown){
		var ul_obj = document.getElementById(ul_id);
		
		
		
		if (ul_obj.collapsed !== true && ul_obj.offsetHeight > 0 ) {
			ul_obj.style.visibility = 'hidden';
			ul_obj.style.display = 'none';
			ul_obj.collapsed = true;
		}else{
			ul_obj.style.visibility = 'visible';
			ul_obj.style.display = 'block';
			ul_obj.collapsed = false;
		}
		
	}