跨浏览器DOM加载函数

function DomLoaded(fn) {
	var isReady = false;
	var timer = null;
	function doReady() {
		if (timer) clearInterval(timer);
		if (isReady) return;
		isReady = true;
		fn();
	}
	if (document.addEventListener) {
		addEvent(document, 'DOMContentLoaded', function () {
			fn();
			removeEvent(document, 'DOMContentLoaded', arguments.callee);
		});
	} else{
		var timer = null;
		timer = setInterval(function () {
			try {
				document.documentElement.doScroll('left');
				doReady();
			} catch (e) {};
		}, 1);
	}
}

DomLoaded(function(){
	//your code here...
});