function about()
{
	window.showModalDialog("/_about.htm", "", "dialogWidth: 606px; dialogHeight: 385px; center: 1; help: 0; status: 0");
}

function errorTrap(sMsg,sUrl,sLine)
{
	alert("脚本出错！提示信息：\n"+sMsg+"\n"+sUrl+"\n"+sLine);
	return true;
}
window.onerror=errorTrap;