//禁用后退按钮function stopHistoryGo() {	//禁用回退	window.location.hash="no-back-button";	window.location.hash="Again-No-back-button";//again because google chrome don't insert first hash into history	window.location.hash="Again-No-back-button";	window.οnhashchange=function(){window.location.hash="no-back-button";}	window.setTimeout(function(){window.location.hash="Again-No-back-button";},1000);}