sfHover = function() 
{     
	if (typeof document.body.style.maxHeight != 'undefined') {
	    return
	}
	var sfEls = document.getElementById("main-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);