Why the ondblclick do not fire

tttbag

Hi guys,

i just write a simply HTML file using Google Maps API
i have no idea why the ondblclick event do not work.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
  <head>
    <meta http-equiv="content-type" content="text/html; charset=utf-8"/>
    <title>-Hello World-</title>
    <script src="http://maps.google.com/maps?file=api&v=2&key=ABQIAAAABU4-7AyMK5njKPmdFyMxvhSYvcQyh1QIjDFxY4jbd4Iov9Uq0RSagtNN9ddzOdXpUugS9qsj6h4R3g" type="text/javascript"></script>
    <script src="OnLine.js" type="text/javascript"></script>
  </head>
  <body  ondblclick="alert('Hello World')" >
     <div id="map" style="width:700px;height:600px"></div>
  </body>
</html>

Anybody have any idea?

Thank you very much!