<script language="JavaScript" type="text/javascript">function check() { if (document.orderform.numberwidgets.length == 0) { alert("You have not ordered any widgets!"); } else if (document.orderform.forename.length <= 1) { alert("You have not entered a valid Forename!"); } else if (document.orderform.surname.length <= 1) { alert("You have not entered a valid Surname!"); } else if (document.orderform.address1.length < 10) { alert("You have not entered a valid address!"); } else if (document.orderform.town.length < 5) { alert("You have not entered a valid Town!"); } else if (document.orderform.county.length < 5) { alert("You have not entered a valid County"); } else if (isValidPostcode(document.orderform.postcode) == false) { alert("The post code you have entered is not valid (if this function works!)"); }}// the following function was found online at http://www.codingforums.com/archive/index.php?t-49925.htmlfunction isValidPostcode(postcode) {if (!/^[A-Z]{1,2}\d{1,2} \d[A-Z]{2}$/.test(postcode)) {return false;}return true;}