I'm not a mac user, but I think @Whats_out_the_bag: knows how to do it in Safari.
I think it depends on the manga if romance works. For example SAO was hurt quite badly by it. I mean for example one second Kirito and Asuna are at each others throats then the next episode they are freinds then the episode after that they got married. That was too fast for romance. Still in other mangas it can make i and has to be in there or it will be flat and useless. For example one of my favorite mangas' Medaka Box if it didn't have the romance aspect to it between Zenkichi and Medaka then there would be no real proper closure to the storyline and the ending would leave people just not wanting to reread.