Use collapse plugin for spoiler

[Quy]

I have not tested this idea, however, how about using the BS collapse plugin for spoiler instead of the following code?

onclick="var e,d,c=this.parentNode,a=c.getElementsByTagName('div')[1],b=this.getElementsByTagName('span')[0];if(a.style.display!=''){while(c.parentNode&&(!d||!e||d==e)){e=d;d=(window.getComputedStyle?getComputedStyle(c, null):c.currentStyle)['backgroundColor'];if(d=='transparent'||d=='rgba(0, 0, 0, 0)')d=e;c=c.parentNode;}a.style.display='';a.style.backgroundColor=d;b.innerHTML='▲';}else{a.style.display='none';b.innerHTML='▼';}"

[Studio384]

This is something that will be done in 2.1.