function clearText(formField)
{
	if (formField.defaultValue == formField.value){
		formField.value = '';
		formField.style.color = '#000000';
	}
}

function addText(formField)
{
	if (formField.value == ''){
		formField.value = formField .defaultValue;
		formField.style.color = '#8c9bba';
	}
}

function checkForm(form, fields)
{
	for(var i=0; i<fields.length; i++) {

		if ((form[fields[i]].value == "") || (form[fields[i]].value == form[fields[i]].title)) {
			alert( "Vul a.u.b. het veld '" + form[fields[i]].value + "' in.");
			form[fields[i]].focus();
			return false ;
		}
	}
	return true ;
}