<!-- hide script from old browsers

function validate_required(field,alerttxt)
{
	with (field)
	{
		if (value==null||value=="")
			{alert(alerttxt);return false} 
		else {return true}
	}
}

function validate_form(thisform)
{
with (thisform)
{
if (validate_required(txtNaam,"Gelieve uw naam in te vullen.")==false)
  {txtNaam.focus();return false}

if (validate_required(txtEmail,"Gelieve uw e-mail adres in te vullen.")==false)
  {txtEmail.focus();return false}

if (validate_required(txtMailbody,"Gelieve uw boodschap in te vullen.")==false)
  {txtMailbody.focus();return false}
}
}

// end hiding script from old browsers -->