function InstallerSearch() {
		var zip = document.getElementById('Zip').value;
		if (isValidZipCode(zip)) {
			window.open('http://ecoseal.knaufinsulation.us/Locator/LocatorResults.aspx?zip=' + zip, 'LocatorResults', 'scrollbars=yes,width=500,height=700');
		}
		else {
			alert("Please enter a valid zip code in format ##### or #####-####.");
		}
	}     

function isValidZipCode(value) {
		var re = /^\d{5}([\-]\d{4})?$/;
		return (re.test(value));
        }