function makeRequest(url, target, showloading) {

	var http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...

	   http_request = new XMLHttpRequest();

	   if (http_request.overrideMimeType) {http_request.overrideMimeType('text/xml');}

	}

	else if (window.ActiveXObject) { // IE

	   try {

		http_request = new ActiveXObject("Msxml2.XMLHTTP.3.0");

	   } catch (e) {

		  try {

		   http_request = new ActiveXObject("Microsoft.XMLHTTP.3.0");

		  } catch (e) {}

		 }

	   }

	   if (!http_request) {alert('Nem sikerült XMLHTTP példányt létrehozni!');return false;}

	  

				  if(showloading == 1){

								window.document.getElementById(target).innerHTML = '<img id="'+target+'_loader" src="javascript/ajax-loader.gif" />';

				  }

	  

	   if(target != "no-target"){

								http_request.onreadystatechange = function() { alertContents(http_request, target); };

	   }
	

	   http_request.open('GET', url, true);
	   
	   http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded;charset=ISO-8859-2");

	   http_request.setRequestHeader("Transfer-Encoding","transfer-extension");

	   http_request.setRequestHeader("Connection","close");

   http_request.send(null);

}

function alertContents(http_request,target) {

	if (http_request.readyState == 4) {

	  if (http_request.status == 200) {

		window.document.getElementById(target).innerHTML = http_request.responseText;
		setContentSizeByMain();
				  }

	  }

}