var menuTime; 
	var prevDescriptionId; 
	var descPrefix = "desc_"; 
			
	function showElement(id){
		var boxObj;
		
		if (id){
			boxObj = top.document.getElementById(id);
			boxObj.style.display = "block";
		}
	}

	function hideElement(id){
		var boxObj;
		if (id){
			boxObj = top.document.getElementById(id);
			boxObj.style.display = "none";
		}
	}
	
	
	function changeCatalog(){
		var cat_id;
		var selectObj;
		var fullUrlStr, urlStr, descUrlStr;
		
		selectObj = document.getElementById('catalogs');	
		cat_id = selectObj.value;
		urlStr = 'showThumbs.php?cat_id=' + cat_id; 
		fullUrlStr = 'showFull.php?catId=' + cat_id;
		descUrlStr = 'showDesc.php?catId=' + cat_id
		fullFrame.location.href = (fullUrlStr);
		thumbFrame.location.href = (urlStr);
		descFrame.location.href = (descUrlStr);
	} 
	
	function changeCatalogAssignment(){
		var urlStr;
		var cat_id;
		var selectObj;
		
		selectObj = document.getElementById('catalogs');	
		cat_id = selectObj.value;
		urlStr = 'index.php?page=listings&cat_id=' + cat_id; 
		window.location.href = (urlStr);
	}		

			
	function stopTimer(){
		window.clearTimeout(menuTime);	
	}
	
	function startTimer(element){
		var actionStr;
		
		actionStr = "hideElement('" + element + "')"
		menuTime = window.setTimeout(actionStr, 1500);
	}
	
	function showNav(id){
	//	stopTimer();
		hideOtherNavs(id);
		showElement(id);
	}
	

	function fillInputValue(id, inpValue){
		var inputObj; 
		inputObj = top.document.getElementById(id);
		inputObj.value = inpValue;
	}

	function confirmDelete(){
		var agree = confirm("Are you sure you want to delete these items?");
		if (agree){
			return true ;
		} else {
			return false ;
		}	
	}