var http_request = false;
   var body="body"; //default
   function makePOSTRequest(url, parameters) {
      var url=url;
      http_request = false;
      if (window.XMLHttpRequest) { // Mozilla, Safari,...
         http_request = new XMLHttpRequest();
         if (http_request.overrideMimeType) {
         	// set type accordingly to anticipated content type
            //http_request.overrideMimeType('text/xml');
            http_request.overrideMimeType('text/html');
         }
      } else if (window.ActiveXObject) { // IE
         try {
            http_request = new ActiveXObject("Msxml2.XMLHTTP");
         } catch (e) {
            try {
               http_request = new ActiveXObject("Microsoft.XMLHTTP");
            } catch (e) {}
         }
      }
      if (!http_request) {
         alert('Cannot create XMLHTTP instance');
         return false;
      }
      
      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);
   }

   function alertContents() {
	   if (http_request.readyState <= 4){
			document.getElementById('loading').innerHTML = "Betöltés...<img src='hn_images/ajax_loader.gif'>";
			document.getElementById("divajax").style.visibility = "visible";

	   }
      if (http_request.readyState == 4) {
         if (http_request.status == 200) {
			document.getElementById('loading').innerHTML = "";
			document.getElementById("divajax").style.visibility = "hidden";		
			
            //alert(http_request.responseText);
            result = http_request.responseText;
            document.getElementById(body).innerHTML = result;   
			body="body"; //default
         } else {
            alert('There was a problem with the request.');
         }
      }
   }
    
///new
function encodeNameAndValue(sName,sValue){
	var sParam=encodeURIComponent(sName);
	sParam += "=";
	sParam +=encodeURIComponent(sValue);
	return sParam;
}
function post(url,form,container){
	//Tömb a paramétereknek
	container
	if( typeof( container ) != 'undefined' ){
		body=container;
	} else{
		body="body";	
	}
	
	var formSzint=form;
	if( typeof( formSzint ) != 'undefined' ){
		//alert (formSzint);
	} else{
	formSzint=1;	
	}
//	alert (formSzint);
	var aParams= new Array();
	//var  
	
	//Az urlap hivatkozás megszerzése
	var oForm = document.forms[formSzint];
	
	//végigmegyünk az urlap minden elemén
	for (var i=0 ; i< oForm.elements.length; i++){
		
		//a mezoreferencia megszerzése
		var oField = oForm.elements[i];
		
		//mezo típusok kezelése
		switch (oField.type){
			//gombok kihagyása
			//case "button":
			//case "submit":
			//case "reset":
			//break;
			
			//jelölok, rádió gombok: érték csak akkor ha be van jelölve
			case "checkbox":
			case "radio":
			    if (!oField.checked){
					break;
				}
				
			// text/hidden/pass
			case "text":
			case "hidden":
			case "password":
			     aParams.push(encodeNameAndValue(oField.name,oField.value));
				 break;
				 
				 
			//egyéb
			default:
			switch (oField.tagName.toLowerCase()){
				case "select":
				    aParams.push(encodeNameAndValue(oField.name,oField.options[oField.selectedIndex].value));
					break;
					
				default:
				   aParams.push(encodeNameAndValue(oField.name,oField.value));
			}
		}
	}
	var elemek=aParams.join("&");
	//return elemek;
	makePOSTRequest(url,elemek);
}