// kontrola obsahu formulářového pole
function kontrolaObsahu(pole) 
{
  switch (pole)
  {
    case document.getElementById('email') :
      if( pole.value=="@" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "block";
        document.getElementById('errorFormKu').style.display= "none";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('ku') :
      if( pole.value=="" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('jinyTermin') :
      if( pole.value=="" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "none";
        document.getElementById('errorFormTermin').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('jinaTx') :
      if( pole.value == "" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "none";
        document.getElementById('errorFormTermin').style.display= "none";
        document.getElementById('errorFormJina').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('deleniDelka') :
      if( pole.value == "" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "none";
        document.getElementById('errorFormTermin').style.display= "none";
        document.getElementById('errorFormJina').style.display= "none";
        document.getElementById('errorFormDeleni').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('vytyceniDelka') :
      if( pole.value == "" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "none";
        document.getElementById('errorFormTermin').style.display= "none";
        document.getElementById('errorFormJina').style.display= "none";
        document.getElementById('errorFormDeleni').style.display= "none";
        document.getElementById('errorFormVytyceni').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('bremenoDelka') :
      if( pole.value == "" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "none";
        document.getElementById('errorFormTermin').style.display= "none";
        document.getElementById('errorFormJina').style.display= "none";
        document.getElementById('errorFormDeleni').style.display= "none";
        document.getElementById('errorFormVytyceni').style.display= "none";
        document.getElementById('errorFormBremeno').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
    case document.getElementById('igSpecifikace') :
      if( pole.value == "" )
      {
        pole.focus();
        document.getElementById('errorFormEmail').style.display= "none";
        document.getElementById('errorFormKu').style.display= "none";
        document.getElementById('errorFormTermin').style.display= "none";
        document.getElementById('errorFormJina').style.display= "none";
        document.getElementById('errorFormDeleni').style.display= "none";
        document.getElementById('errorFormVytyceni').style.display= "none";
        document.getElementById('errorFormBremeno').style.display= "none";
        document.getElementById('errorFormIg').style.display= "block";
        return false;
      } 
      else
      {
        return true;
      }
      break;
  }
}

function Validate(form) {
  if( !kontrolaObsahu(form.email) ) return false;
  if( !kontrolaObsahu(form.ku) ) return false;
  if( form.termin0.checked )
  {
    if( !kontrolaObsahu(form.jinyTermin) ) return false;
  } 
  if( form.jina.checked )
  {
    if( !kontrolaObsahu(form.jinaTx) ) return false;
  } 
  if( form.deleni.checked )
  {
    if( !kontrolaObsahu(form.deleniDelka) ) return false;
  } 
  if( form.vytyceni.checked )
  {
    if( !kontrolaObsahu(form.vytyceniDelka) ) return false;
  } 
  if( form.bremena.checked )
  {
    if( !kontrolaObsahu(form.bremenoDelka) ) return false;
  } 
  if( form.ig.checked )
  {
    if( !kontrolaObsahu(form.igSpecifikace) ) return false;
  } 
  return true;
}