Reading the original post I suspect that the design was done in some graphic editor and then just sliced and put together in tables with some automatic tool. Very bad idea because then it happens what you are experiencing: the design isnít flexible.
The best would be you learn how to code semantic websites
with HTML and CSS
, and then slice your images manually so the ones that need to repeat nicely.
If youíre not willing or able to do this yourself then asking, or better, paying someone to do it is another option.