Fading Navigation Menu in iWeb. Please help?

Fading Navigation Menu in iWeb. Please help?

Hello,
I have never designed my own website and about 2 months ago, I have been trying to do so using iWeb. I am a self professed ludite  so please be patient with me. As you know, iWeb is very limiting. To compound problems, the genius's at the the Apple store  say that iWeb and jquery are not compatible. Even so, I have managed  to get a jquery based Fading Navigation Menu up and running on my website. Here is a link to the code that I used: http://css-tricks.com/color-fading-menu-with-jquery/ - I added a html snippet in iWeb. The  problems I am having now is: 1) changing the font - I would like  Helvetica Light - 2) changing the color of the menu bar, 3) changing  the text color, 4) changing the rollover color of the text, and 5) making each menu button relative in size to each word. I have tried to open up the files with textwrangler and changing these things there but to no avail. It is so very complicated. Is there a way I can change the above mentioned but just adding to the html snippet that I added in iWeb? Below is the image of the fading navigation menu. It is sitting on top of my iWeb designed navigation menu. I would like to change the font, colors, and spacing  of the fading menu to match my iWeb designed one. Once I do that I will delete the iWeb version. Please visit my website too at: http://www.bigapplephototours.com/BigApplePhoto/Home1.html - I hope someone can help me with this.
David