Head to Head bars invisible in Firefox

[gaudenz]

Head to Head timebars are invisible in Firefox. This is due to the reference in the CSS to #negative and #positive which does not resolve inside the context of the current DOM but relative to the CSS file and is therefore not found. Apparently this is the correct behavior according to the CSS specs and other browsers get this wrong.

See: http://stackoverflow.com/questions/15842224/firefox-svg-with-fillurlid-style-in-external-stylesheet-broken-inline-style

[rasifix]

A first version which at least shows the bars again in firefox is pushed to github. I will see how to really fix the fancy bars in firefox. I guess, I'll have to inline to styles.