transforming layout mock to xslt

I'm basically finished transforming the layout html mock to xslt - however, the xslt files are not properly tested yet because I cannot submit any form data due error. This is especially serious for review page, since I have incorporated it as part of view game information page.

I want to put some of the very frequently used codes into a separate file like header_footer.xslt, so that they can be accessed by xsl:apply-template in other files with out repeating same code for different files. For example, now I have also put #logo & #menu into header_footer.xslt, they seem to work very well. The next step, I want to put content from the right side, like user online indicator, various game recommendations, into 1 separate file so they can be accessed by other files when needed.

1. I can either put all of them into header_footer.xsl, but I'm not sure if this will cause problem in the future - especially with xpath reference. I'll go into this detail later when actually doing it.
2. I can also try to make a new xslt file just for those modules, but I will need to understand completely all the codes that are responsible for generating xslt file like header_footer.xsl.