function switchMenu(obj, newClass) {
            obj.className = newClass;
        }

        function simplePreload() {
            var args = simplePreload.arguments;
            document.imageArray = new Array(args.length);
            for (var i = 0; i < args.length; i++) {
                document.imageArray[i] = new Image;
                document.imageArray[i].src = args[i];
            }
        }

	function switchRule(newRule){
		var getDivs = document.getElementsByTagName('div');
		for (var i=0;i<getDivs.length;i++){
			if (getDivs[i].id.substr(0,2) == 'rl'){
				getDivs[i].style.display = 'none';
			}
		}
		document.getElementById(newRule).style.display = 'inline';
	}