function controleer(formulier)
{
   var melding = "";
   if(formulier.Reactie.value == "") {
       document.getElementById("Reactie").style.border = " 1px solid #E70509";
       melding = "geef melding";
   } else {
       document.getElementById("Reactie").style.border = " 1px solid #7C95BE";
   }

   if (formulier.Naam.value == "") {
       document.getElementById("Naam").style.border = " 1px solid #E70509";
       melding = "geef melding";
   } else {
       document.getElementById("Naam").style.border = " 1px solid #7C95BE";
   }

   if (formulier.Email.value == "") {
       document.getElementById("Email").style.border = " 1px solid #E70509";
       melding = "geef melding";
   } else {
       if (formulier.Email.value.search(/^[^@]+@[^@]+.[a-z]{2,}$/i) == -1) {
           document.getElementById("Email").style.border = " 1px solid #E70509";
           melding = "geef melding";
       } else {
           document.getElementById("Email").style.border = " 1px solid #7C95BE";
       }
   }

   if (melding !== "") {
       document.getElementById("Melding").style.display = 'block';
       return (false);
   }
}

function textCounter(field, maxlimit) {
   if (field.value.length > maxlimit) {
       field.value = field.value.substring(0, maxlimit);
   }
}