function opensignup() {
	document.getElementById('regform').style.visibility='visible';
	document.email.focus();
}

function closesignup() {
	document.getElementById('regform').style.visibility='hidden';
}

function openpop(popid) {
	document.getElementById('popupbg').style.visibility='visible'
	document.getElementById(popid).style.visibility='visible'
}

function closepop(popid) {
	document.getElementById('popupbg').style.visibility='hidden'
	document.getElementById(popid).style.visibility='hidden'
}


sfHover = function() {
	var sfEls = document.getElementById("nav_x").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);