function popupWindow(theURL,winName,features) 
{
  window.open(theURL,winName,features);
}

function ValidateContactNL(theForm) 
{
  var missing = ""
  if (theForm.naam.value == "")
    missing += "  * Naam\n"
  if (theForm.email.value == "")
    missing += "  * E-mail\n"
  if (theForm.vraag.value == "")
    missing += "  * Uw vraag\n"
  if (missing != "") 
  {
   alert("De volgende velden zijn verplicht:\n" + missing)
   return false
   }
   else
     return true
}

function ValidateContactFr(theForm) 
{
  var missing = ""
  if (theForm.naam.value == "")
    missing += "  * Nom\n"
  if (theForm.email.value == "")
    missing += "  * E-mail\n"
  if (theForm.vraag.value == "")
    missing += "  * Votre question\n"
  if (missing != "") 
  {
   alert("De champs suivants sont vides:\n" + missing)
   return false
   }
   else
     return true
}