GMap with Markers created with Feeds

Hi All,

I'm trying to use GMap to display locations of nodes in my site, basically replicating the functionality displayed here:

gmapfeeddemo

I used to use gmap_draw_map, but now that function looks to be essentially deprecated and in the notes in the function, the developer says to create a js file that extends the jscript GMap API and use drupal_add_js.

Are there any examples out there that might show how to develop these dynamic js files (especially examples that incorporate feed-based data)? If not- does anyone have any hints or ideas for how to get this going?

Thanks