$.ajax({

             url : "../folder/isExistAddFolder.do?t="+new Date(),

             type : 'POST',

             data:{"foldername":foldername,

             "parentid":parentid,

             "foldertype":foldertype

             },

             success : function(result){

                 if(result==true){

                         $('#addfolderfrom').form('submit', {

                             url : urls,

                             onSubmit : function() {

                                 return $(this).form('validate');

                             },

                             success : function(data) {

 //                                alert(JSON.stringify(data));

                                 var result = eval('(' + data + ')');

                                 if (result.error) {

                                     top.showAlert('提示',result.msg , 'info');

                                 } else {

                                         reloadDatas('queryFolder.htm', 'projectfenlei',parentid,4);

                                         reloadData('PorjectInfo', 'projectInfo');

                                         closeUnit();

 //                                    }

                                 }

                         }

                     });

                 }else{

                    top.showAlert('提示', '项目名称已存在', 'info');

                 }

             },

             dataType:"json",

             error : function(result) {

             }

         });