function formCallback(result, form) {
window.status = 'validation callback for form ' + form.id + ': result = ' + result;
}
						
var valid = new Validation('frm_validation', {immediate : true, onFormValidate : formCallback});

Validation.addAllThese([
	['required', 'Please fill in the above field.', function(v) {
		return !Validation.get('IsEmpty').test(v);
		}],
	['validate-one-required', 'Please select a search option above.', function (v,elm) {
		var p = elm.parentNode;
		var options = p.getElementsByTagName('input');
		return $A(options).any(function(elm) {
		return $F(elm);
		});
		}],
	['validate-selection', 'Please select.', function(v,elm){
		return elm.options ? elm.selectedIndex > 0 : !Validation.get('IsEmpty').test(v);
		}],
	['validate-digits', 'The field has to consist of numbers only.', function(v) {
		return Validation.get('IsEmpty').test(v) ||  !/[^\d]/.test(v);
		}],
	['validate-alpha', 'The field has to consist of letters only.', function (v) {
		return Validation.get('IsEmpty').test(v) ||  /^[A-ZÀ-Ža-zà-ž\'-,\s]+$/.test(v)
		}],
	['validate-email', 'An email address must looks like mail@domaine.com.', function (v) {
		return Validation.get('IsEmpty').test(v) || /\w{1,}[@][\w\-]{1,}([.]([\w\-]{1,})){1,3}$/.test(v)
		}],
	['validate-url', 'Please enter a valid URL.', function (v) {
		return Validation.get('IsEmpty').test(v) || /^(http|https|ftp):\/\/(([A-Z0-9][A-Z0-9_-]*)(\.[A-Z0-9][A-Z0-9_-]*)+)(:(\d+))?\/?/i.test(v)
		}],
	['city', 'Please enter your city -and/or your post code.', {
		notOneOf: ['No city found'],
		minLength: 1
		}],
	['validate-password', 'Your password must be 6 to 10 characters long.', {
		minLength: 6,
		maxLength: 10
		}],
	['validate-password-confirm', 'Password and confirmed password do not match.', {
		equalToField: 'password'
		}]
]);