Nick Maaß: Pop-up

Hallo,
iwe kann ich beim aufrufen meiner seite,zusätzlich noch einen pop-up erscheinen?

  1. <!-- TWO STEPS TO INSTALL CUSTOMIZED POPUP:

    1.  Copy the coding into the HEAD of your HTML document
      2.  Add the last code into the BODY of your HTML document  -->

    <!-- STEP ONE: Paste this code into the HEAD of your HTML document  -->

    <HEAD>

    <SCRIPT LANGUAGE="JavaScript">

    <!-- This script and many more are available free online at -->
    <!-- The JavaScript Source!! http://javascript.internet.com -->

    <!-- Begin
    function popupPage(l, t, w, h) {
    var windowprops = "location=no,scrollbars=no,menubars=no,toolbars=no,resizable=yes" +
    ",left=" + l + ",top=" + t + ",width=" + w + ",height=" + h;

    var URL = "http://www.yahoo.com";
    popup = window.open(URL,"MenuPopup",windowprops);
    }
    //  End -->
    </script>
    </HEAD>

    <!-- STEP TWO: Copy this code into the BODY of your HTML document  -->

    <BODY>

    <center>
    <table>
    <tr>

    <td>
    <form name=popupform>
    <pre>
    Customize Your Popup Window!<br>
    Distance from left edge:  <input type=text name=left size=2 maxlength=4> pixels
    Distance from top edge:   <input type=text name=top size=2 maxlength=4> pixels

    Width of popup window:    <input type=text name=width size=2 maxlength=4> pixels
    Height of popup window:   <input type=text name=height size=2 maxlength=4> pixels
    </pre>
    <center>
    <input type=button value="Open the Popup!" onClick="popupPage(this.form.left.value, this.form.top.value, this.form.width.value, this.form.height.value)">
    </center>
    </form>
    </td>

    </tr>
    </table>
    </center>

    <p><center>
    <font face="arial, helvetica" size="-2">Free JavaScripts provided<br>
    by <a href="http://javascriptsource.com">The JavaScript Source</a></font>
    </center><p>