css repeat background vertically

[matieh]

I can't seem to figure out how to vertically repeat a background image on a \[code\]<div>\[/code\]here's my code.http://jsfiddle.net/pedenski/Sw6wB/what im trying to accomplish here is to put a shadow effect on the side of the page. similar with the http://www.adobe.com/ website. you'd see a shadow border on both sides.