Url structure for image menu?

Hi.

I'm building image menu and i would like to know if menu shown below will couse any problems?



The titles of the particular pages would be:

Nature Background | Lake 1
Nature Background | Flowers

etc.

I'm just asking because i'm little bit scared if google will penalize my sites because i'm using too much "nature background" and this is, for example, the only keyword that i'll be backlinking (the primary page that i'll be backlinking would be the first one - (URL address blocked: See forum rules))... (the problem may also be that i'll have just a little page contet because image is image and i can descripe it only in few sentenses)

I think i wont have problems but i would like to hear your opinions because if i do it wrong i'll have later a looooooooot of work to change/correct it.

Thank you in advance

You shouldn't be using images as your site navigation, you should be using contexual links. You can use CSS to get the same look as you would with image buttons. You can use blank image buttons and use CSS to place text over them, thus looking like a image button, but really it's a contexual link. You can do quite a few other things with CSS in regards to this, but thats the basic.