<!--

function checkform ( form )
{
  if (form.naam.value == "" || form.bericht.value == "")
  {
    alert( "Je bent vergeten alle verplichte velden in te vullen." );
    if (form.naam.value == "") form.naam.focus();
    else form.bericht.focus();
    return false ;
  }
  else
  {
    createCookie('gastenboek_naam', form.naam.value, 365);
 		form.naam.value += ' '; // automatisch spatie toevoegen, i.v.m. automatische spam controle
    return true;
  }
}

// AUTOMATISCH VULLEN VAN FORMULIER OP BASIS VAN COOKIE
function vul_formulier(form_id) 
{
	var form = document.getElementById(form_id);
	var cookie = readCookie("gastenboek_naam");
	var gastenboek_naam = cookie ? cookie : "";

	if (gastenboek_naam == "" )
	{
		form.naam.focus();
	}
  else
	{
		form.naam.value = gastenboek_naam;
		form.bericht.focus();
	}
}

function createCookie(name,value,days) {
  if (days) {
    var date = new Date();
    date.setTime(date.getTime()+(days*24*60*60*1000));
    var expires = "; expires="+date.toGMTString();
  }
  else expires = "";
  document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
  var nameEQ = name + "=";
  var ca = document.cookie.split(';');
  for(var i=0;i < ca.length;i++) {
    var c = ca[i];
    while (c.charAt(0)==' ') c = c.substring(1,c.length);
    if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
  }
  return null;
}


//-->