Problem when I try to create a node with a map

Hi All,

I have a fresh drupal installation with Google Maps Tools (I have installed geonames and Jquery UI)
I have created a new node type with a GMaps Address and Point field.

Problem:
When I try to create a dummy content i do not see any map in my edit node, but only the word "Loading...." (see image attached).

Using firebug I have noticed that the page is returning a kind of error:
"you should enable javascript to use the map". (see attached)

Please could someone help me to fix this.

Thanks a lot.
Carlo