Google Maps: Full screen and transparency

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I've used Premium Google Maps (perhaps I will try Enhanced or Extended later) on my site and it works very well basically, but there are 2 things I can't find solutions to:

http://hittaglass.se/

One is if it is possible to get Google Maps in "Full screen mode" somehow? I've seen slideshow addons as well as background images with fullscreen but I suppose they work only for pictures, and there are themes that use the full width, but stacking Google Maps with othe rstuff under eachother (comment field, e-mail etc) might look nice enough but I think scrolling past Google Maps then might be difficult since Google Maps can't know if you try to scroll within it or within the entire site. Or can it? In my mind I imagine some addon consisting of only a frame and a button "fullscreen".

The other is to get transparency in icons (markers). As you can see, I haven't succeeded yet, even though my icons are png with transparency in alpha channel. I tried:
* <color>77777777</color> at "style" in kml
* adding #content-wrapper img { background: transparent; border: 1px solid #DCDCDC; padding: 8px; } in main css (belonging to my selected theme "Dreamy")
* adding .googleMapCanvas img { background: none; } in main css
* adding these two things to design / css / additional css for the block

I realize from other threads that G maps supports transparency, but it is beyond me to understand if the error is in the theme (css etc), the G maps implementation or what.

I'm not sure where's best to ask this but I think the questions might be fairly general or at least apply to several G Maps addons.