$(document).ready(function(){
    
    cont= $.ajax({
    url: "art.php",
    cache: false,
    success: function(html){
        $("#contentwrapper").html(html);
    }
    });
    
    right= $.ajax({
    url: "right_col.php",
    cache: false,
    success: function(html){
        $("#rightcolumn").html(html);
    }
    });
  
  $("#content").css("visibility","hidden");
  
   $("#content").html("")
  
 });