how can i change the output of JavaScript to go to directly to another page instead of an alert window?
<pre><code>    &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
        &lt;head&gt;
            &lt;title&gt;Validate Zip Code&lt;/title&gt;
            &lt;script type="text/javascript"&gt;
                function IsValidZipCode(zip) {
                    var isValid = /20132/.test(zip);
                    if (isValid)
                        alert('Valid ZipCode');
                    else {
                        alert('yep')
                         }
                }
            &lt;/script&gt;
        &lt;/head&gt;


   &lt;body&gt;
    &lt;form&gt;
    &lt;input id="txtZip" name="zip" type="text" /&gt;&lt;br /&gt;
    &lt;input id="Button1" type="submit" value="Check My Zipcode"
    onclick="IsValidZipCode(this.form.zip.value)" /&gt;
    &lt;/form&gt;
    &lt;/body&gt;
    &lt;/html&gt;
</code></pre>

<p>I need to use this to allow the user to go either to a page that says sorry we cannot service your area or to another page that says yes we can service your area based on wheter their zipcode is listed.</p>

<p>also how can i add more than one zip code in the isValid = line?</p>
