GIS and Satellite Mapping

[putty]

Ok this problem has had me stumped for a few days now, I am creating an online mapping application, it uses SVG and a postGIS database to store the points lines and polygons.

 

I also wanted the ability to overlay satellite maps, I created a little script that generates a link to an image of the correct position and scale using NASA Blue Marble satellite images. I have been displaying the image to the page then I right click and save the image to the server.

 

The problem is I need over 5000 different maps, this means I have to create and manually save all 5000+ image… plus there are new maps coming online all the time.

 

What I want to do is have a script that automatically saves the images to the server.

 

I have tried creating a new image using ImageCreateFromJPEG() or  ImageCreateFromGd() using the link with little success.

 

Any one got any suggestions???????

 

Link to one of the generated images: http://onearth.jpl.nasa.gov/wms.cgi?request=GetMap&layers=global_mosaic&styles=&srs=EPSG:4326&bbox=141,-23.5,147,-19&WIDTH=1024&HEIGHT=768&format=image/jpeg

 

My map generator: http://www.ozblog.com.au/?p=276 Or http://www.ozblog.com.au/SatelliteMapGenerator/?Xmin=110&Ymin=8&Dx=50&Dy=37.5&type=jpeg&width=1024&hight=768