function login(){
	$.ajax({   
        url: 'https://gqpc.whkc.com.cn/arcgis/sharing/rest/community/self', 
        type: 'post',  
        dataType:'json',
        data:{"f":"json","token":_token},
        success: function (result) { 
           /* _token = result.token;
        	init();*/
        },   
        error: function(xhr){   
            alert("请求出错");   
        }   
   });
                
}