function boxfocus(obj, val){
	var cur = obj.value;
	if (cur == val) obj.value = "";
}

function boxblur(obj, val){
	var def = obj.value;
	if (def == "") obj.value = val;
}

try{
	document.execCommand('BackgroundImageCache', false, true); 
}
catch(e) {}

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);