API GetSpellTextureFileName

Returns the texture path of the specified spell
 texture = GetSpellTextureFileName(spellId or spellName)
== Arguments ==
One of the following can be used to specify a spell to query:
;spellId : Number - The spell's unique ID.
;spellName : String - The name of the spell.
== Returns ==
;texture : String - Path of the texture used for displaying the spell.