关闭窗口，解决window.close()失效

function f_close(){
if(typeof(WeixinJSBridge)!="undefined"){
WeixinJSBridge.call('closeWindow');
}else{
if(navigator.userAgent.indexOf("MSIE") > 0) {
if (navigator.userAgent.indexOf("MSIE 6.0") >0) {
window.opener = null; window.close();
}
else {
window.open('', '_top'); window.top.close();
}
}
else if(navigator.userAgent.indexOf("Firefox") > 0) {
window.location.href = 'about:blank ';
//window.history.go(-2);
}
else {
window.opener = null;
window.open('', '_self', '');
window.close();
}
}
}