[solved] Make drop down menu appear above image?

[Techn]

Hi,
I've been redesigning a website using a free template and changing it to work with the site. It has a horizontal menu at the top of the page which works fine using the 'minimal menu' menu and stylesheet, but i want this to display the level 2 options via dropdown box.

I acheived this by changing the menu template to 'css menu'. However when the level 2 option is displayed not all the options are seen because they are hidden behind a banner image also at the top of the page.

Does anyone know of a simple code solution to fix this? I'm an ameture user but am getting to grips with the code. Can read it and change it, but cant write new pieces.
Currently using newest cmsms

Thanks

[Techn]

solved my own problem.

I simply asigned a z index number to the header image in the css style sheet. for example "z-index:-1" sent the image to the back of the order.

But then you all probably knew that anyway lol