function show_news(show_id, hide_id1, hide_id2){
		if(!document.getElementsByTagName){
			return false;
		}
		var show_obj  = document.getElementById(show_id);
		var hide_obj1 = document.getElementById(hide_id1);
		var hide_obj2 = document.getElementById(hide_id2);
		show_obj.style.display = "block";
		hide_obj1.style.display = "none";
		hide_obj2.style.display = "none";

		return false;
	}

	function show_contents(id){
		if(!document.getElementsByTagName){
			return false;
		}
		var obj = document.getElementById(id);
		if(obj.style.display == "block"){
			obj.style.display = "none";
		}
		else{
			obj.style.display = "block";
		}

		return false;
	}

	function show_menu(show_id, hide_id){
		if(!document.getElementsByTagName){
			return false;
		}
		var show_obj  = document.getElementById(show_id);
		var hide_obj = document.getElementById(hide_id);
		show_obj.style.display = "block";
		hide_obj.style.display = "none";

		return false;
	}