[Sticky navigation] fix #153 , replace titleElement.innerText by titleElement.innerHTML as the attribute does not exists on FF.
[Sticky navigation] fix #153 , replace titleElement.innerText by titleElement.innerHTML as the attribute does not exists on FF.

KleeGroup/focus-components,KleeGroup/focus-components,Jerom138/focus-components,Ephrame/focus-components,Ephrame/focus-components,JRLK/focus-components,JRLK/focus-components,JabX/focus-components,Jerom138/focus-components,JabX/focus-components,Jerom138/focus-components,sebez/focus-components,Ephrame/focus-components,asimsir/focus-components,asimsir/focus-components,sebez/focus-components,get-focus/focus-components,JRLK/focus-components