addLoadEvent(function () {
	validateWhereToBuyForm();
});

function validateWhereToBuyForm() {
	var form = $('whereToBuy_form');
	var inputPostcode = $('inputPostcode');

	if (!form) return;

	form.onsubmit = function () {
		if (!validate(inputPostcode, 'Please enter a postcode', hasSubstance(inputPostcode.value))) return false;
	};
}