The clean and simple YOOdrawer is a vertically aligned module which uses nice sliding transitions while hovering the items.

When you mouse over an item, it will expand to show additional information while all other items shrink. It is normally used in a side panel, as shown here to the right side of the page.

Essentially a space saver, the yoo-drawer is very useful where lots of related information needs to be displayed on a crowded page.