Fix logging in latest FireFox (Tested with 15.0.1)
Fix logging in latest FireFox (Tested with 15.0.1)

liorvh/grinder,un-fmunozs/grinder,syjzwjj/grinder,syjzwjj/grinder,sigma-random/grinder,stephenfewer/grinder,sigma-random/grinder,mayconvitali/grinder,stephenfewer/grinder,liorvh/grinder,un-fmunozs/grinder,syjzwjj/grinder,sigma-random/grinder,stephenfewer/grinder,syjzwjj/grinder,sigma-random/grinder,mayconvitali/grinder,syjzwjj/grinder,zhuyue1314/grinder,stephenfewer/grinder,sigma-random/grinder,mayconvitali/grinder,mayconvitali/grinder,zhuyue1314/grinder,liorvh/grinder,mayconvitali/grinder,stephenfewer/grinder,un-fmunozs/grinder,liorvh/grinder,un-fmunozs/grinder,liorvh/grinder,un-fmunozs/grinder,zhuyue1314/grinder,zhuyue1314/grinder,zhuyue1314/grinder