function load_comments(div_id,commentModel,commentModelId,pageSize,width,ctx,pageNo) {
  $('#'+div_id).load(ctx +'/ajax/comments/comment.jsp',
        {"commentModel":commentModel ,
         "commentModel_id":commentModelId ,  
         "pageSize": pageSize,
         "width":width,
         "pageNo":pageNo
         });
}

function checkUserLogin(ctx) {
        $("<div id='is_user_login_check' style='display:none' islogin='false' />").appendTo("body");
        $.ajax({
           url: ctx + "/ajax/check_userlogin.jsp",
           cache: false,
           async: false,
           dataType: "json",
           success: function(data) {
                 if(data.isDone) {
                     $("#is_user_login_check").attr('islogin','true');
                 } else {
                     $("#is_user_login_check").attr('islogin','false');
                 }
           }
        });
        var result =  $("#is_user_login_check").attr('islogin');
        return result;
}