function savePrefs(str)
{
	var xmlhttp=GetXmlHttpObject();
	if (xmlhttp==null)
	  {
	  alert ("Browser does not support HTTP Request");
	  return;
	  }
	var url="kalyna_registration.php";
	url=url+"?kalyna_registration=true&username="+document.getElementById("username").value;
	if (document.getElementById('prod1').checked) url=url+"&prod1=prod1";
	if (document.getElementById('prod2').checked) url=url+"&prod2=prod2";
	if (document.getElementById('prod3').checked) url=url+"&prod3=prod3";	
	if (document.getElementById('subs1').checked) url=url+"&subs1=subs1";
	if (document.getElementById('subs2').checked) url=url+"&subs2=subs2";	
	
	alert(url);
	//xmlhttp.onreadystatechange=stateChanged;
	xmlhttp.open("GET",url,true);
	xmlhttp.send(null);
}