Javascript UI (map overlay) + Java backend

Create a library which will be used for showing overlays on top of a global map with zooming possibilities (and defined area customization)

1) Create a standalone JAVA application which will continually grab the image overlays from multiple sources

- You should implement the Norwegian data source http://www.yr.no/kart/#lat=65.00146&lon=19.54158&zoom=4&laga=temp&proj=900913 onto a google map layer
- There are 4 different overlays on this site for the whole world: precipitation, temperature, wind, pressure
- Download everything what is available there (at least 8 times per day)
- Store the files in by creating only a few files in the directory, so that after a longer period the directory will not have thousand or more files
- After every download, create a JSON file which will include filenames for time period -[3] days to +[7] days. This will be used by JAVASCRIPT when rendering the timeline and loading the overlays. 3 and 7 should be easily changeable.

2) Create standalone JAVASCRIPT library which will load the JSON file (stored on the local filesystem by JAVA app), use OpenLayers to load map into a given HTML element and render the timeline control and all animation functionality as on yr.no site (any alterations are open for discussion). Parameters:

- render element (width/height if necessary)
- type (precip, temper, wind, pressure)
- time period (-[3] to +[7] default)
- zoom level
- lon/lat position
- timezone as string (include http://momentjs.com/ to be compatible with our existing code)
- language (moment.js should have translations of week days)
- string for displaying copyright data in the footer (as yr.no)