sfFocus = function() {
	var sfEls = document.getElementsByTagName("INPUT");
	for (var i=0; i<sfEls.length; i++) {
		sfEls[i].onfocus=function() {
			this.className+=" sffocus";
		}
	}
}
if (window.addEventListener) window.addEventListener('load', sfFocus, false);
else if (window.attachEvent) window.attachEvent('onload', sfFocus);