sfHover = function() {
	var sfEls = document.getElementById("main").getElementsByTagName("LI");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			this.className+=" sfhover";
		}
		sfEls[i].onmouseout=function() {
			this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
		}
	}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);

function getRandomLogo(max) {
	var logo = document.getElementById('logo');
	var logoNum = Math.floor(Math.random()*max+1);
	if (logo != null) {
		logo.setAttribute('src', 'img/logo' + logoNum + '.gif');
	}
}

window.onload = function() {
	getRandomLogo(3);
}