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This is a little study of a one file JavaScript game (graphics are drawn with div tags). It has been tested with Firefox 2.0 and MSIE 6.0 so far. Currently you can:

• move the UFO with the cursor keys
• fire lasers with the space bar

Version history:

• v0.2 - Feb 10th 2007: Code clean-up ("sprite" functions, getEl(), code size reduced by 30%)
• v0.1 - Dec 30th 2006: Proof of concept uploaded