function sfClick() {

var nurNav = document.getElementById("navigation");
var sfEls = nurNav.getElementsByTagName("ul");
	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[1]){

				lis2[j].onclick = function() {
					if(this.getElementsByTagName("ul")[0].style.display != 'block') {
						this.getElementsByTagName("ul")[0].style.display = 'block';
					} else {
						this.getElementsByTagName("ul")[0].style.display = 'none';
					}

				}
			}
		}
	}

}