MenuArrow = {
	id: "main_menu_arrow",
	
	show: function(div){
		div.style.position = "relative";
		div.appendChild(document.getElementById(this.id));
		document.getElementById(this.id).style.display = "block";
	},
	
	hide: function(div){
		document.getElementById(this.id).style.display = "none";
	},
	
	click: function(div_id){
		var value = (document.getElementById(div_id).style.display == "none")? "block" : "none"; 
		document.getElementById(div_id).style.display = value;
	}
}