function new_req()
{
	var req = null;
	if(!req) { 
      try { req = new XMLHttpRequest(); }
      catch(e) {} 
  } 
  if(!req) {
      try { req = new ActiveXObject("Microsoft.XMLHTTP") }
      catch(e) {} 
  } 
  return req;
}

function checkRegInput(input)
{ 
  var req = new_req();
  var name = input.value;
  req.open('GET', '/check.php?f=reg&t='+input.name+'&v=' + name, true);
//  alert('/check.php?f=reg&t='+input.name+'&v=' + name);
  req.onreadystatechange = function() { 
      if(req.readyState < 4) return; 
      if(name != input.value) return; 
      var msg = document.getElementById('ajaxvysl');
      var submit = document.getElementById('regSubmit'); 
      id=document.getElementById("v_"+input.id);
			if(req.responseText == "1") {id.className="red";}
      else {id.className="green";} 
  }; 
  req.send(null);
} 

function showRegForm()
{
	document.getElementById('lfor').className='form1';
	document.getElementById('frmLog').className='hide';
	document.getElementById('frmReg').className='show';
	
}	

function showLogForm()
{
	document.getElementById('lfor').className='form2';
	document.getElementById('frmReg').className='hide';
	document.getElementById('frmLog').className='show';
}

function regFrm(frm)
{
	if ((document.getElementById('v_idomena').className=="green") &&
			(document.getElementById('v_iheslo').className=="green") &&
			(document.getElementById('v_iemail').className=="green")) return true;

	alert('Vyplňte správně všechny pole.');
	return false;
}	

function regFrmContact(frm)
{
//	alert(document.getElementById('idjmeno').value);
	if ((document.getElementById('idjmeno').value=="") ||
			(document.getElementById('idtelefon').value=="") || 
			(document.getElementById('idemail').value=="")) 
	{			
			alert('Vyplňte správně všechny pole.');
			return false;
	}		
	return true;
}