function send_prid(php,meno,sprava,ktr)
  {
  
  var xmlHttp;
  try
    {
    // Firefox, Opera 8.0+, Safari
   xmlHttp=new XMLHttpRequest();
   }
  catch (e)
    {
    // Internet Explorer
    try
      {
     xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
      }
    catch (e)
      {
      try
        {
        xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
        }
      catch (e)
        {
        alert("Your browser does not support AJAX!");
        return false;
        }
      }
    }
    xmlHttp.onreadystatechange=function()
      {
      if(xmlHttp.readyState==4)
        {
        }
      }

    input=php+"?name="+meno+"&msg="+sprava+"&ktore="+ktr;
    xmlHttp.open("GET",input,true);
    xmlHttp.send(null);
    
  
  }

  

function sendPridaj(id,ktr){

  if (document.getElementById(id).checked == true)
     send_prid('funkcia_porovnaj.php','1',id,ktr);
   else send_prid('funkcia_porovnaj.php','2',id,ktr); 

  }