sfHover = function() {
	var sfEls = document.getElementById("nav").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 externalLinks() {
	var domain = document.URL.match( /:\/\/(www\.)?([^\/:]+)/ );
	domain = domain[2] ? domain[2] : '';
	for (var i=0; i<=(document.links.length-1); i++) {
		var url = document.links[i].href;
		if (!url.match('javascript') && url != '#') {
			if (url.match(domain)) document.links[i].target = document.links[i].target;
			else document.links[i].target = '_blank';
		}
	}
}