function checkForm() {
  ime = document.getElementById("ime").value;
  email = document.getElementById("email").value;
  url = document.getElementById("url").value;
  autor = document.getElementById("autor").value;
  autor_url = document.getElementById("autor_url").value;
  city = document.getElementById("city").value;
  descp = document.getElementById("descp").value;
  
  if (ime == "") {
  hideAllErrors();
document.getElementById("imeError").style.display = "inline";
document.getElementById("ime").select();
document.getElementById("ime").focus();
  return false;
  }
  
  else if (url == "http://") {
hideAllErrors();
document.getElementById("urlError").style.display = "inline";
document.getElementById("url").select();
document.getElementById("url").focus();
  return false;
  }

  else if (url == "") {
hideAllErrors();
document.getElementById("urlError").style.display = "inline";
document.getElementById("url").select();
document.getElementById("url").focus();
  return false;
  }
  
    else if (descp == "") {
hideAllErrors();
document.getElementById("descpError").style.display = "inline";
document.getElementById("descp").select();
document.getElementById("descp").focus();
  return false;
  }
  
    else if (autor == "") {
hideAllErrors();
document.getElementById("autorError").style.display = "inline";
document.getElementById("autor").select();
document.getElementById("autor").focus();
  return false;
  }
  
  else if (email == "") {
hideAllErrors();
document.getElementById("emailError").style.display = "inline";
document.getElementById("email").select();
document.getElementById("email").focus();
  return false;
  }
  
      else if (autor_url == "http://") {
hideAllErrors();
document.getElementById("autor_urlError").style.display = "inline";
document.getElementById("autor_url").select();
document.getElementById("autor_url").focus();
  return false;
  }

      else if (autor_url == "") {
hideAllErrors();
document.getElementById("autor_urlError").style.display = "inline";
document.getElementById("autor_url").select();
document.getElementById("autor_url").focus();
  return false;
  }
  
      else if (city == "") {
hideAllErrors();
document.getElementById("cityError").style.display = "inline";
document.getElementById("city").select();
document.getElementById("city").focus();
  return false;
  }

  document.Form.submit();
  //return true;
  }
 
  function hideAllErrors() {
document.getElementById("imeError").style.display = "none"
document.getElementById("emailError").style.display = "none"
document.getElementById("descpError").style.display = "none"
document.getElementById("urlError").style.display = "none"
document.getElementById("autorError").style.display = "none"
document.getElementById("autor_urlError").style.display = "none"
document.getElementById("cityError").style.display = "none"
  }