CSS Dropdown Menu, Cross-Browser

I need a cross-browser compliant (IE6+, FF2+,Opera) dropdown menu that styles <UL> and <LI> elements, nested to one level, to look like the menu shown here: [login to view URL] ## Deliverables Delivery includes an external CSS file and an HTML file including up to two levels of nested UL/LI. Use the following list as a model, with hrefs for each item: Introduction Quick Start Soap & WSDL XML Over HTTP Code Support List and Subscription Management Message Composition and Sending Reporting Profile Management Tools Soap Test Tools XML Over HTTP Test Tool Support