function showDescription(theItem){
	//alert(theItem);				
	var calItem="details_"+theItem;
	var note=document.getElementById(calItem);				
	note.style.visibility='visible';	
}

function hideDescription(theItem){
	//alert(theItem);
	var calItem="details_"+theItem;
	var note=document.getElementById(calItem);
	note.style.visibility='hidden';
}