Weblabor

var url = "ajax_hajo.php?beszallito_id="; 

function handleHttpResponse() 
{

  if (http.readyState == 4) 
  {
    if (http.responseText.indexOf('invalid') == -1) 
    {
      var out_text = ''; 

      var xmlDocument = http.responseXML;
      x = xmlDocument.documentElement.childNodes;
      for(var i=0; i< x.length; i++)
      {                            
         out_text += '<option value="' + xmlDocument.getElementsByTagName('value').item(i).firstChild.nodeValue 
                  + '"' 
                  + xmlDocument.getElementsByTagName('selected').item(i).firstChild.nodeValue 
                  + '>' 
                  + xmlDocument.getElementsByTagName('option').item(i).firstChild.nodeValue
                  + '</option>';
       } 
                               
       document.getElementById('kategoria_id').innerHTML = out_text;      
       
       isWorking = false;      
    }   
  }

}

var isWorking = false;

function liste_load() 
{      
 if (!isWorking && http) 
 {
    var beszallito_id = document.getElementById("beszallito_id").value;

    http.open("GET", url + escape(beszallito_id), true);

    http.onreadystatechange = handleHttpResponse;

    isWorking = true;

    http.send(null);
  }
}

function getHTTPObject() {

  var xmlhttp;

  if (window.XMLHttpRequest)
  {
     xmlhttp=new XMLHttpRequest();
     if(xmlhttp)
     {
        alert('FF http objektum OK'); 
     }
  }
  // code for IE
  else if (window.ActiveXObject)
  {
     xmlhttp=new ActiveXObject("Microsoft.XMLHTTP")
     if(xmlhttp)
     {
        alert('IE http objektum OK'); 
     }
       
  }
  return xmlhttp;  
}

var http = getHTTPObject();