341858 and 348126, and regression 389924 inability to dynamically set caption. patches by bernd, bzbarsky and mats.palmgren, back-porting by dholbert, bzbarsky and dveditz, r=bernd, bzbarsky, sr=bzbarsky,dbaron, a=dveditz git-svn-id: svn://10.0.0.236/branches/MOZILLA_1_8_BRANCH@237282 18797224-902f-48f8-a5cc-f745e15eee43