function preload_menu() 
{ 
	if(!document.images){ return;}

	document.menu_buttons = new Array();
	j = document.menu_buttons.length;
	args = preload_menu.arguments;

	for(i=0; i<args.length; i++) {
		document.menu_buttons[j]=new Image; 
		document.menu_buttons[j++].src= "_tpl/img/menu_" + args[i] + "_selected.gif";
	}
}

function select_menu(menu_name)
{
	func_menu(menu_name,"_selected");
}

function deselect_menu(menu_name)
{
	func_menu(menu_name,"");
}

function func_menu(menu_name,selected)
{
	img = document.getElementById("m_"+menu_name);
	img.src = "_tpl/img/menu_" + menu_name + selected +".gif";
}