How do I create an overall visual style for my templates?

[Joshua Oransky]

	I need to have a common look around the edges of my sling  
templates... Things like a nav, background, footer, etc...  In fact,  
the only thing that changes is the middle div... how is the best way  
to set up these files?

	I would think that a global layout.jst would be defined, and in it a  
general 'include content.jst" but how can I tell it to use the  
content.jst of my current resourceType?

        Or am I totally missing how to set this up?

        -Josh