//Javascript functions

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 showMask(){
	if (document.getElementById('mask')){
		document.getElementById('mask').style.display='inline';
	}
}

function hideMask(){
	if (document.getElementById('mask')){
		document.getElementById('mask').style.display='none';
	}
}

function showMask2(){
	if (document.getElementById('mask2')){
		document.getElementById('mask2').style.display='inline';
	}
}

function hideMask2(){
	if (document.getElementById('mask2')){
		document.getElementById('mask2').style.display='none';
	}
}