/**************************************************
	* Adds event triggers to html elements unobtrusivly
	**************************************************/
	function addEvent(elm, evType, fn, useCapture){
		if(elm.addEventListener){
			elm.addEventListener(evType, fn, useCapture);
			return true;
		} else if(elm.attachEvent){
			elm['on' + evType] = fn;
		}
	}

	/************************************************
	* Used in conjunction with the Sarissa library
	************************************************/
    siteNav = function() {
        var sfEls = document.getElementById("sitenav").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"), "");
            }
        }
    }

    // Add listeners on page load
	addEvent(window, 'load', siteNav, false);