sfHover = function() 
{
	if(document.getElementById("nav") != null)
	{
		var sfEls = document.getElementById("nav").getElementsByTagName("LI");
		for (var i=0; i<sfEls.length; i++) 
		{
			sfEls[i].onmouseover=function() 
			{
				this.className+=" sfhover";
				// hide selects
				toggleSelects('hidden');
			}
			sfEls[i].onmouseout=function() 
			{
				this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
				// show selects
				toggleSelects('visible');
			}
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfHover);
 
function toggleSelects(visibility)
{
 var selects = document.getElementById('content-wrapper').getElementsByTagName("select");
 var i = selects.length;
 while (i--)
  selects[i].style.visibility = visibility;
}