function ss(id){
	var obj=document.getElementById(id);
	return obj;
}
function addLoadEvent(func) {
	var oldonload = window.onload;
	if (typeof window.onload != "function") {
		window.onload = func;
	} else {
		window.onload = function () {
			oldonload();
			func();
		};
	}
}