function prepocti() 
{
	
	var cook;
	var pid = document.getElementById("txtPID").value;
	var oldks = document.getElementById("txtKsOld").value;
	var newks = document.getElementById("txtKsNew").value;
	var newNote = document.getElementById("txtNoteNew").value;
	var oldNote = document.getElementById("txtNoteOld").value;

	writeCookie('cart',document.getElementById("temp").value, 1);
		
	cook = readCookie('cart');
	
	ind = cook.indexOf(pid + 'Y' + oldks + 'Y' + oldNote);
	
	podret = cook.substring(0, ind + pid.length + 1);
	
	podretright = cook.substring(ind + pid.length + oldks.length + oldNote.length + 2, cook.length);
    
	ind = podret.indexOf('¤');
	
	finalret = podret + newks + 'Y' + newNote + podretright;
	writeCookie('cart',finalret, 1);
	
	window.location.replace("index.php?page=cart"); 
}

function odeber() {
	
	cook = readCookie('cart');

	var pid = document.getElementById("txtPID").value;
	var tmp = document.getElementById("temp").value;
	var ks = document.getElementById("txtKsOld").value;
	var Note = document.getElementById("txtNoteOld").value;

	writeCookie('cart',tmp, 1);
	
	ind = cook.indexOf(pid + 'Y' + ks + 'Y' + Note);
	
	retleft = cook.substring(0,ind);
	
	rettmp = cook.substring(ind+1,cook.length);
	
	ind2 = rettmp.indexOf('¤');

	
	if (ind2>-1)  retright=rettmp.substring(ind2+1,cook.length);
		else retright="";
	//retright = cook.substring(ind + pid.length + ks.length + 2, cook.length);
	
	ret=retleft + retright;

	if (ret.substring(ret.length-1,ret.length) == '¤') 
	{
	ret = ret.substring(0,ret.length-1);
	}
	
	writeCookie('cart',ret,1);
	window.location.replace("index.php?page=cart"); 

	
	
	//alert('ind:' + ind + ' - r' + retleft + '  l' + retright + 'pid:' + pid + 'ks:' + ks );
}

// Example:
// writeCookie("myCookie", "my name", 24);
// Stores the string "my name" in the cookie "myCookie" which expires after 24 hours.
function writeCookie(name, value, hours)
{
  var expire = "";

  if(hours != null)
  {
    expire = new Date((new Date()).getTime() + hours * 1800000);
    expire = "; expires=" + expire.toGMTString();
  }

  document.cookie = name + "=" + escape(value) + expire;
}

// Example:
// alert( readCookie("myCookie") );
function readCookie(name)
{
  var cookieValue = "";
  var search = name + "=";

  if(document.cookie.length > 0)
  { 
    offset = document.cookie.indexOf(search);
    if (offset != -1)
    { 
      offset += search.length;
      end = document.cookie.indexOf(";", offset);
      if (end == -1) end = document.cookie.length;
      cookieValue = unescape(document.cookie.substring(offset, end));
    }
  }
  return cookieValue;
}

function kontrola()
{
	if(document.getElementById("txtjmeno").value=="" ||  document.getElementById("txtPrijmeni").value=="" || document.getElementById("txtUlic").value=="" || document.getElementById("txtMesto").value=="" ||document.getElementById("txtPSC").value=="" || document.getElementById("txtEmail").value=="" || document.getElementById("txtTelefon").value=="") alert("Vyplnte prosím všechna tucne oznacená pole!");
}

function Cust2Cookie()
{
	var data;

	data = document.getElementById("txtjmeno").value + '*' + document.getElementById("txtPrijmeni").value + '*' + document.getElementById("txtUlic").value + '*' + document.getElementById("txtMesto").value + '*' + document.getElementById("txtPSC").value + '*' + document.getElementById("txtEmail").value + '*' + document.getElementById("txtFirma").value + '*' + document.getElementById("txtICO").value + '*' + document.getElementById("txtDIC").value + '*' + document.getElementById("txtTelefon").value + '*' + document.getElementById("txtMobil").value + '*' + document.getElementById("txtNote").value;

	writeCookie('cust', data, 1)
 alert
}

function Cookie2Cust()
{
	var data = readCookie('cust');

	if (data!="") {
	pdata = data.split(';');

	document.getElementById("txtjmeno").value = pdata[0];
	document.getElementById("txtPrijmeni").value = pdata[1];
	document.getElementById("txtUlic").value = pdata[2];
	document.getElementById("txtMesto").value = pdata[3];
	document.getElementById("txtPSC").value = pdata[4];
	document.getElementById("txtEmail").value = pdata[5];
	document.getElementById("txtFirma").value = pdata[6];
	document.getElementById("txtICO").value = pdata[7];
	document.getElementById("txtDIC").value = pdata[8];
	document.getElementById("txtTelefon").value = pdata[9];
	document.getElementById("txtMobil").value = pdata[10];
	}
}