I have a XUL file in which an iframe element referencing an HTML file.
The iframe element looks differently in browser window and in standalone
chrome window (use MozillaFirebird -chrome ... command line). In browser
window, the iframe is transparent, while in a standalone chrome window,
it is opaque with white background, whether or not I apply
"style='background-color: transparent" to the HTML and BODY elements.
I know that in nsPresShell.cpp, user preferences about HTML styles are
treated differently for chrome windows. However, after I check the style
items with DOM Inspector, I can't find any difference in the HTML and
BODY styles about background transparency.
How does this difference take effect?
Wang Xianzhu
