function addLoadEvent(func) {
	var oldonload = window.onload;
	if(typeof window.onload != 'function') {
		window.onload = func;
	} else {
		window.onload = function() { 
			oldonload();
			func();
			}
		}
	}

function loadMenu() {
    var menu1 = new slideMenu("menu1",2);
	var menu2 = new slideMenu("menu2",9);
	var menu3 = new slideMenu("menu3",2);
	var menu5 = new slideMenu("menu5",3);

	}
addLoadEvent(loadMenu);
//addLoadEvent(externalLink);
slideMenu.lineHeight = 24;