function a_schr(s_in)
{

s_in1 = s_in.split("|"); //typ|id

  var xhr = createXHR();
  xhr.onreadystatechange = function()
  {
    if (xhr.readyState == 4)
    {
      if (xhr.status == 200){
        // vypiseme vracena data ze scriptu
        //alert(xhr.responseText);
        
        //document.getElementById('schr_pocet').value = xhr.responseText;
        //document.getElementById("xxx").innerHTML = xhr.responseText; //zmeni vse v divu
        //bud se hlaska vypise zde nebo z php
	    //"".$response."|".$s_pocet."|".$alert."|".$plno;

        c1 = xhr.responseText.split("|");
	    
	    if ( c1[2]=='1' ){ alert(c1[0]); }	    
        if ( c1[3]!='1' && s_in1[0]=='misto' ){ schr_count(s_in1[1],c1[1]); } //id,pocet
        if ( c1[3]!='1' && s_in1[0]=='gps' ){ schr_count(0,c1[1]); }
        if ( c1[3]!='1' && s_in1[0]=='trasa' ){ schr_count(0,c1[1]); }
        
      }else{
        alert('Pozadavek se nepodarilo zpracovat. Zkuste to za chvili znovu.');
      }
    }
  };

//trasa
if ( s_in1[0]=="trasa" )  {

s_box_from=document.getElementById('s_box_from').value;
s_box_to=document.getElementById('s_box_to').value;

s_box_km=document.getElementById('s_box_km').value;
s_box_cena=document.getElementById('s_box_cena').value;
s_box_cena_km=document.getElementById('s_box_cena_km').value;
s_box_spotreba=document.getElementById('s_box_spotreba').value;
s_box_palivo=document.getElementById('s_box_palivo').value;
s_box_pozn=document.getElementById('s_box_pozn').value;

s_in='trasa|'+s_box_from+'|'+s_box_to+'|'+s_box_km+'|'+s_box_cena+'|'+s_box_cena_km+'|'+s_box_spotreba+'|'+s_box_palivo+'|'+s_box_pozn;
						  }
//gps
if ( s_in1[0]=="gps" && s_in1[1]=="" ) { //a nic v url a

m_pos=document.getElementById('bod_gps').value;
map_zoom=document.getElementById('bod_zoom').value;
map_type=document.getElementById('bod_map_type').value;

s_in='gps|'+m_pos+'|'+map_zoom+'|'+map_type;

						  }
						  		  
  var parameters = "s_data=" + encodeURIComponent(s_in);

  // volany soubor
  xhr.open("POST", "/schranka_ajax.php", true);
  xhr.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  xhr.send(parameters);
}

/**
 * Vytvoreni AJAX objektu
 * @return ajax objekt
 */
function createXHR()
{
  var request = false;
  try {
    request = new ActiveXObject('Msxml2.XMLHTTP');
  }
  catch (err2) {
    try {
        request = new ActiveXObject('Microsoft.XMLHTTP');
    }
    catch (err3) {
      try {
        request = new XMLHttpRequest();
      }
      catch (err1)
      {
        request = false;
      }
    }
  }
  return request;
}

function schr_count(so,pocet) {
	var el;

	el=document.getElementById("s_pocet");
	//el.innerHTML=parseInt(el.innerHTML)+1;
	//p1 = pocet.toString();
	el.innerHTML=pocet;
	document.getElementById('s'+so).src = '/images/menu/schranka_in.gif';
}