//function to make dropdown menu work in IE
function sfHover() {
	var sfEls = document.getElementById('nav').getElementsByTagName('LI');
	for (var i=0; i<sfEls.length; i++) {			
	
	if((sfEls[i].id == 'subnav1') || (sfEls[i].id == 'subnav2') || (sfEls[i].id == 'subnav3')) {		
			sfEls[i].onmouseover=function() {
				this.className+=' sfhover';				
			}
		
			sfEls[i].onmouseout=function() {
				this.className=this.className.replace((' sfhover'), '');
			}		
		}
	}
}

window.onload = function() {	
	sfHover();
}