var http_request = false;
function ajax_request(url, parameters, met, div) {
      http_request = false;
      if (window.XMLHttpRequest) {
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) {
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Az Ön böngészője nem támogatja az AJAX (\'XMLHTTP\') futtatását, Így a weboldalt nem tudja megelelően használni!');
         return false;
      }
	  
      if (met=='post'){
      http_request.onreadystatechange = alertContents;
      http_request.open('POST', url, true);
      http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
      http_request.setRequestHeader("Content-length", parameters.length);
      http_request.setRequestHeader("Connection", "close");
      http_request.send(parameters);
   }else{
	  http_request.onreadystatechange = alertContents;
	  http_request.open('GET', url, true);
	  http_request.send(parameters); 
	    }
   }
function alertContents() {
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
            result = http_request.responseText;
            document.getElementById(my_div).innerHTML = result;            
         } else {
            document.getElementById(my_div).innerHTML = 'Hibás kérés vagy hivatkozás.\n HIBA státusz: '+http_request.status;
         }
      }else{
		  document.getElementById(my_div).innerHTML = '<div align="center"><img src="images/loading.gif" /><br /> ellenőrzés...</div>';
		  }
   }
   
   function domain_check(){
	var   domain = document.getElementById("s_domain").value;
	var   domain_tld = document.getElementById("s_tld").value;
	var    para='domain='+domain+'&tld='+domain_tld;
	
	my_div = 'domain_check_div';
	
	   ajax_request('domain_ellenor.php', para, 'post', 'domain_check_div') ;
	   
	   	   }