Works also with latest xenforo 1.5.x if anybody will use it.
example code to add:
HTML:
<xen:if is="{$thread.reply_count} > 50"><img src="../images/fire15.apng"/></xen:if>
eg: XenPorta (Recent Threads Widget)
Edit: EWRwidget_Threads >> thread_list_item
find in the template:
HTML:
<xen:else />
{xen:helper threadPrefix, $thread}
</xen:if>
after add:
HTML:
<xen:if is="{$thread.reply_count} > 50"><img src="../images/fire15.apng"' alt="Hot!" title="Hot discussed thread"/></xen:if>
Change 50 to what ever you mean a thread should be hot or not and edit the image source to your preferences. Thats all. In the attached zip you will find the fire as animated 16x16 apng file.
Looks like:
View attachment 197475
Same way you can made this for other thread list templates if you want. Better way would be to make a TMS entry, so its sure when you made next update.