There are several problems:
1. The input you're trying to update does not have an ID.
2. That same input has name="poly" which is the same name you've given
to your GPolygon object.
3. And add an ID to your input field.
<input id="myInputField">
4. This line GEvent.addListener(poly, "lineupdated", onUpdate) points
at the function that contains it.
Change it to something like this:
GEvent.addListener(poly, "lineupdated", function(){
document.getElementById('myInputField').value =
poly.getVertexCount();
});
5. Remove the <form> tags. They are doing nothing.
6. Notice what difference posting a link makes! :-)
--
Marcelo - http://maps.forum.nu
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