jScrollPane is a jQuery plugin which provides you with custom scrollbars which work consistently across all modern browsers. You can easily control the apperance of the scrollbars using simple CSS and they degrade gracefully where Javascript is disabled.

jScrollPane allows you to replace the browsers default vertical scrollbars on any block level element with an overflow:auto style. It is crossbrowser, working on all browsers that support jquery and it also degrades gracefully. If a user's browser doesn't support jQuery or has Javascript turned off then they will see the browsers default scrollbars. If the mouse wheel plugin is included in the page then the scroll panes will also respond to mouse wheel events.