where does the style information in Admincp come from

[Dionysis]

ok, you know all the blue boxes, borders, background images etc. where are those located in the admincp code?

for example, i'm editing templates.php to add another entire tablebox to display a set of custom templates. the code for that part is *very* sparse, only a few lines that prints out the entire page. i can't find the code for the dropdown box where you select "edit templates" as well as a few other things.

if someone could point out the code structure going on here alittle further please, thanks !