sfh = function() {
	var e = document.getElementsByTagName("input");
	for (i=0; i<e.length; i++) {
		if (e[i].className == "submit")	{
			e[i].onmouseover=function() {this.className+=" over";};
			e[i].onmouseout=function() {this.className=this.className.replace(" over", "");};
		}
	}
}

if (window.attachEvent) window.attachEvent("onload", sfh);