function doFocus() {
	sfFocus();		
}

function sfFocus() {
	var lis = document.getElementsByTagName('a');
	for(i=0;i<lis.length;i++) {
			drawFocus(lis[i]);
	}
}

function drawFocus(obj) {
	obj.onfocus=function() {this.className+=" sfhover";}
	obj.onblur=function() { this.className=this.className.replace(new RegExp("sfhover\\b"), "");}
}

addLoadEvent(doFocus);