ColdFusion - simple question (?)

Well, it should be simple, but I'm not having any luck so far...

Is there a function or way to get the complete URL of the current CF page? I'm imagining a function something like GetCurrentURL() which returns a string like such:
"http://www.domain.com/subdir/file.cfm?param1=x&param2=y"

(I'm needing this in some header and template files which could be called from any number of pages, which is why my page doesn't know its own URL.)

Thanks!