GWT sliding side panel

I am interested in how would you approach creating sliding side panel in GWT? (i.e. social networks sliding panel on the left of this page: http://开发者_开发问答www.inc.com/articles/2011/03/how-19-year-old-daniel-gross-is-taking-on-google-with-greplin.html)

What kind of events should I handle?

Regards

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This kind of stuff can be done entirely with CSS. Have a look at the css properties position: relative (for the initial position), position: fixed as well as top and left properties when the user scrolls.