<!-- hover expand navigation submenu script for IE 6 and 7 by Mike Z -->
sfHover = function () {
	var sfEls = document.getElementById("nav").getElementsByTagName("li");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onmouseover=function() {
			var sf = this.getElementsByTagName("ul");
                      if (sf.length > 0) {
                          sf[0].style.display = "block";
                      }
                  }
		sfEls[i].onmouseout=function() {
			var sf = this.getElementsByTagName("ul");
                  for (var i=0; i<sf.length; i++) {
                       sf[i].style.display = "none";
                  }
		}
	}
}
if(window.addEventListener){ // Mozilla, Netscape, Firefox
	addEventListener('load', sfHover, true);
} else { // IE
	window.attachEvent('onload', sfHover);
}