var xmlHttp

function updateContent(str)
{
   if (str.length==0)
   {
      document.getElementById("promedicuscontent").innerHTML="";
      return;
   }

   xmlHttp=GetXmlHttpObject();
   if (xmlHttp==null)
   {
      alert ("Your browser does not support AJAX!");
      return;
   }

   var url="getcontent.php";
   url=url+"?FILE="+escape(str);
   url=url+"&sid="+Math.random();
   xmlHttp.onreadystatechange=stateChanged;
   xmlHttp.open("GET",url,true);
   xmlHttp.send(null);
}

function stateChanged()
{
   if (xmlHttp.readyState==4)
   {
      document.getElementById("promedicuscontent").innerHTML=xmlHttp.responseText;
   }
}

function GetXmlHttpObject()
{
   var xmlHttp=null;
   try
   {
      // Firefox, Opera 8.0+, Safari
      xmlHttp=new XMLHttpRequest();
   }
   catch (e)
   {
      // Internet Explorer
      try
      {
         xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
      catch (e)
      {
         xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
      }
   }
   return xmlHttp;
}