function showfile(filename){
  var xmlHttp;
  try
    {
    // Firefox, Opera 8.0+, Safari
    xmlHttp=new XMLHttpRequest();
    }
  catch (e)
    {
    // Internet Explorer
    try
      {
      xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      try
        {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
      catch (e)
        {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
        {
       	 	if(xmlHttp.responseText != ""){       	 		
       	 		var my_div = document.getElementById('div_display');
       	 		my_div.innerHTML = xmlHttp.responseText;
       	 	}
        }
      }      
    xmlHttp.open("GET",filename,true);
    xmlHttp.send(null);
  }