Fixed issue with unit test not working on FF 5.
Fixed issue with unit test not working on FF 5.

bsuh/tinymce,Zimbra/tinymce,collective/tinymce,ikuchmin/tinymce,ETSI-CTI/TinySpecMCE,aduth/tinymce,sachgits/tinymce,toxalot/tinymce,cclaerhout/tinymce,rxl194/tinymce,VioletLife/tinymce,tinymce/tinymce,danchr/tinymce,FernCreek/tinymce,ETSI-CTI/TinySpecMCE,fashionsun/tinymce,blakewallan/tinymce,TeamupCom/tinymce,jtark/tinymce,rbecheras/tinymce,toxalot/tinymce,aduth/tinymce,Kindling/tinymce,gencer/tinymce,sachgits/tinymce,cclaerhout/tinymce,widgetfactory/tinymce,leofeyer/tinymce,support-dot-com/tinymce,adaptiffdesigns/tinymce,MediehusetTek/tinymce,Razzwan/tinymce,VioletLife/tinymce,widgetfactory/tinymce,fillabs/TinySpecMCE,Shopify/tinymce,dziemian007/tinymce,enfold/tinymce,support-dot-com/tinymce,rxl194/tinymce,rednose-public/tinymce,endjin/tinymce,collective/tinymce,sjbufton/tinymce,adaptiffdesigns/tinymce,tinymce/tinymce,M4R7iNP/tinymce,danielpunkass/tinymce,M4R7iNP/tinymce,mplank/tinymce,gabixdev/tinymce,nikolas/tinymce,gabixdev/tinymce,pmpl-5/tinymce,blakewallan/tinymce,fhchina/tinymce,dziemian007/tinymce,TeamupCom/tinymce,FernCreek/tinymce,ikuchmin/tinymce,fhchina/tinymce,rbecheras/tinymce,ChristophKaser/tinymce,bsuh/tinymce,shilpi230/tinymce,danielpunkass/tinymce,ChristophKaser/tinymce,1099511627776/tinymce,enfold/tinymce,simachewh/tinymce,sjbufton/tinymce,FernCreek/tinymce,ice8lue/tinymce,jashua212/tinymce,shilpi230/tinymce,henrythewasp/tinymce,1099511627776/tinymce,tinymce/tinymce,simachewh/tinymce,rednose-public/tinymce,kencheung/tinymce,howanghk/tinymce,kencheung/tinymce,leofeyer/tinymce,nbcp/tinymce,ice8lue/tinymce,jashua212/tinymce,fashionsun/tinymce,nikolas/tinymce,howanghk/tinymce,Razzwan/tinymce,fillabs/TinySpecMCE,endjin/tinymce,mplank/tinymce,jtark/tinymce,danchr/tinymce,danielpunkass/tinymce,nbcp/tinymce,Kindling/tinymce,henrythewasp/tinymce,MediehusetTek/tinymce,pmpl-5/tinymce,gencer/tinymce,Zimbra/tinymce