How Do I Change the z-index on the menu and sidebar?

[uswebcen 0]

In the header I created a drop down jquery contact form. The problem is it goes under the menu and side bar so you can not utilize it. Is there a place I can change the z-index for the menu nav, the feature slide show and the sidebar???

[bryan-hadaway 3]

In Custom CSS: http://www.pagelines.com/docs/changing-colors-fonts Thanks, Bryan