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 showSelects() {
    var selectContainer = document.getElementsByTagName("select");
    for(i=0; i<selectContainer.length; i++)
        selectContainer[i].style.visibility = "visible";
}

function hideSelects() {
    var selectContainer = document.getElementsByTagName("select");
    for(j=0; j<selectContainer.length; j++)
        selectContainer[j].style.visibility = "hidden";
}