Work around for Tab Mix Plus' brokenness.
Work around for Tab Mix Plus' brokenness.

Refs #1406

Ventero/greasemonkey,the8472/greasemonkey,HasClass0/greasemonkey,the8472/greasemonkey,Martii/greasemonkey,Ventero/greasemonkey,Martii/greasemonkey,HasClass0/greasemonkey