function stopEvent(event) { //阻止冒泡事件

		//取消事件冒泡

		var e = arguments.callee.caller.arguments[0] || event; //若省略此句，下面的e改为event，IE运行可以，但是其他浏览器就不兼容

		if (e && e.stopPropagation) {

			// this code is for Mozilla and Opera

			e.stopPropagation();

		} else if (window.event) {

			// this code is for IE

			window.event.cancelBubble = true;

		}

	}