function ValidateAdd() {

	if (document.input.name.value == "") {
		alert("Geef uw naam!");
        document.input.name.focus();
        return false;
	}

	if (document.input.email.value == "") {
		alert("Geef uw email adres!");
        document.input.email.focus();
        return false;
	}

	if (document.input.subject.value == 0) {
		alert("Geef het onderwerp.");
        document.input.subject.focus();
        return false;
	}

	if (document.input.suggestion.value == "") {
		alert("Geef uw opmerking / suggestie!");
        document.input.suggestion.focus();
        return false;
	}

}


function ValidateChar(field) {
	var valid = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-"
	var ok = "yes";
	var temp;
	for (var i=0; i<field.value.length; i++) {
	temp = "" + field.value.substring(i, i+1);
	if (valid.indexOf(temp) == "-1") ok = "no";
	}
	if (ok == "no") {
		alert("De winkelnaam bevat ongeldige karakters!\nGebruik alleen [0-9], [a-z], [A-Z] en [-].");
		field.focus();
		field.select();
	}
}