function toggleVisible(elm) {
   //new Effect.toggle(elm,'appear',{ duration: 0.3 });
   var dynElm = document.getElementById(elm);
   var style = dynElm.style.display;
   if (style == 'none' || style == '') {
      dynElm.style.display = 'block';
   } else {
      dynElm.style.display = 'none';
   }
}

function showLoadingMessage(e, siteurl) {
   var elm = document.getElementById(e);
   elm.innerHTML = '<img src="'+siteurl+'/media/indicator.gif" alt="" />&nbsp; Bezig met ophalen gegevens';
}

function search(form) {
   var keywords = form.search.value;
   
   if (keywords.length < 4) {
      return false;
   }
   
   return true;
}