function displayComments(mode, id){
		var obj = document.getElementById("commentArea_" + id);
		if (mode){
			if (obj.style.display == "block"){
				obj.style.display = "none";
			}else{
				obj.style.display = "block";
			}	
		}else{
			obj.style.display = "none";
		}
	}
	
	function writeComment(mode, id){
		var obj = document.getElementById("writeComment_" + id);
		if (mode){
			if (obj.style.display == "block"){
				obj.style.display = "none";
			}else{
				obj.style.display = "block";
			}	
		}else{
			obj.style.display = "none";
		}
	}