//显示浮层 postAjax:function(url,param,callback){
      var loadScore = layer_.load(1,{shade: [0.8,'#393D49']});     var ciphertext = root.encrypt(JSON.stringify(param),$.cookie('token'));     var isIE = !!window.ActiveXObject;     var ieMode = document.documentMode;     var isIE8 = isIE && ieMode == 8;     if(isIE8){
          var xdr = new XDomainRequest();         xdr.open("POST", root.IPLocation+url);         xdr.onload = function(){
              //Handle Response with xdr.responseText             layer_.close(loadScore);             var data = JSON.parse(xdr.responseText);             if(data.result == true){
                  if(data.tokenExpired) {
                      root.getTokenApply(function(data){
                          $.cookie('token',data);                         token=data;                         root.getJsonData(url,param,callback);                     });                 }else{
                      callback(data.t);                 }             }else{
                  if(data.msg!=''){
                      layer_.alert(data.msg);                 }             }         }         xdr.send(ciphertext.toString());     }else{
          $.ajax({
              type: 'post',             url:root.IPLocation+url,             data: {info:ciphertext==""?"":ciphertext.toString()},             context: this,             success:function(data) {
                  layer_.close(loadScore);                 if(data.result == true){
                      if(data.tokenExpired) {
                          root.getTokenApply(function(data){
                              $.cookie('token',data);                             token=data;                             root.getJsonData(url,param,callback);                         });                     }else{
                      callback(data.t);                     }                 }else{
                      if(data.msg!=''){
                          layer_.alert(data.msg);                     }                 }             },error:function(){
                  layer_.close(loadScore);                 layer_.alert("网络异常请稍后!");             }         });     } },