function sfClick() {

var nurNav = document.getElementById("navigation");
var sfEls = nurNav.getElementsByTagName("li");
	for (var i=0; i<sfEls.length; i++) {
		var lis2 = sfEls[i].getElementsByTagName("li");
		for (j=0; j<lis2.length; j++){
		
			if(lis2[j].childNodes[2]){

					lis2[j].onmouseout = function() {
					var ul = this.getElementsByTagName("ul")[j];
					ul.style.display =  'none';
				}
				lis2[j].onmouseover = function() {
					var ul = this.getElementsByTagName("ul")[j];
					ul.style.display = 'block';
				}
			}
		}
	}

}