function revertValue (iId) {
	obj=document.getElementById(iId);
	if (obj!=null&&obj.value!='') {
		obj.alt=obj.value;
		obj.onfocus = function(){if(this.value==this.alt){this.value='';}};
		obj.onblur = function(){if(this.value==''){this.value=this.alt;}};
	}
}

window.onload = function () { 
	revertValue("susername");
	revertValue("spassword");
}