var classesChange= function(b,s)
{
if(b=="6"&&s=="17")
{
      var myDate = new Date();       
     $.ajax({
                type: "POST",
                url: "server/bbs.aspx",
                data: "type=checkAdmin&t="+myDate.getMilliseconds(),
                success: function(msg){  
                    if(msg!="")
                    {
                       if(msg=="1")
                       {                       
                          document.getElementById("center_nr_right").src="frame/bbs.aspx?b="+b+"&s="+s;                                            
                       }
                       else
                       {
                       alert("该版块只限版主交流");
                       }
                    }                
                }
            });
}else
{
document.getElementById("center_nr_right").src="frame/bbs.aspx?b="+b+"&s="+s;
}

//$(".left_dh_tity").removeClass("left_dh_tity").addClass("left_dh_tit1") ;
//$("#div"+b).addClass("left_dh_tity") ;
}