Javascript 关闭窗口

function CloseWin()
{
	var ua=navigator.userAgent;
	var ie=navigator.appName=="Microsoft Internet Explorer"?true:false;
		if(ie){
		    var IEversion=parseFloat(ua.substring(ua.indexOf("MSIE ")+5,ua.indexOf(";",ua.indexOf("MSIE "))))
			 	if(IEversion< 5.5){
				    var str  = '<object id=noTipClose classid="clsid:ADB880A6-D8FF-11CF-9377-00AA003B7A11">'
				    str += '<param name="Command" value="Close"></object>';
				    document.body.insertAdjacentHTML("beforeEnd", str);
				    document.all.noTipClose.Click();
			    }
			    else{
				    window.opener =null;
				    window.close();
			    }
		}
		else{
			window.close()
		}
} 

Firefox和ie7都测试通过了
写到外部JS里然后想在哪个页面用,只要导入那个JS文件就好了