Requirements: – customize an existing drawing tool ZK Canvas4Z, the introduction and tools itself is here: http://books.zkoss.org/wiki/Small_Talks/2010/June/How_To_Use_Canvas4Z http://books.zkoss.org/wiki/Small%20Talks/2012/February/How%20To%20Use%20Canvas4Z%20Part2… (Budget: $30-$250 USD, Jobs: CSS, HTML5, Java, Javascript, jQuery / Prototype)
