function requestObj () { // získa objekt XMLHttpRequest
  var req = false;;
  try { req = new XMLHttpRequest();} // IE 7, Firefox, Opera 8...
  catch(e) {
    try { req = new ActiveXObject('Microsoft.XMLHTTP'); } // IE 5.x, IE 6
    catch(e) {}
  }
  return req; // vráti vytvorený objekt
}




// spustí sa automaticky po prijatí správy zo servera
function handleResponse1() {
  if (request.readyState == 4) {
    if (request.status == 200) {
      if ( ajaxOutputType == 'textfield' )
      	document.getElementById(ajaxOutputTarget).value = request.responseText;
      if ( ajaxOutputType == 'innerHTML' )
      	document.getElementById(ajaxOutputTarget).innerHTML = request.responseText;
      if ( ajaxOutputType == 'innerHTMLadd' )
      	document.getElementById(ajaxOutputTarget).innerHTML += request.responseText;
      if ( ajaxOutputType == 'changeBack' )
      	document.getElementById(changeBackTarget).style.backgroundColor = '#'+request.responseText;
    }
  } else {
  }
  return;
}


var ajaxOutputTarget = '';
var ajaxOutputType = '';

var timeout;
var timeout2;
var request = requestObj();


function genAkcniNabidka() {
	if(request.readyState == 4 || request.readyState == 0) {
		firm = 'a';
		ajaxOutputTarget = 'akcni-nabidka';
		ajaxOutputType = 'innerHTML';
		
    request.open('GET', 'index.php?show=akcni-nabidka');
//    request.setRequestHeader('Content-Type','application/x-www-form-urlencoded; charset=iso-8859-2');
    request.setRequestHeader('Content-Type','text/html; charset=windows-1250 ');
    request.send('firm='+firm);
    request.onreadystatechange = handleResponse1;
    
	} else {
		if (timeout) clearTimeout(timeout);
		timeout = setTimeout('genZakazkaCode()',500);
	}
}

  	function refresh() {
	  	refresher=setInterval("genAkcniNabidka()",20000);    // Interval pro obnovovani obrazovky (ms)
    }
//    refresh();
    function neconapis() {
    	datum = new Date();
			document.getElementById('akcni-nabidka').innerHTML = datum.getTime( );
    }
//    genAkcniNabidka();
    
    
function increaseItem(item) {
	return item.value++;
}