Don't have Telegram yet? Try it now!
https://crmsiebel.org/2014/10/19/how-to-make-control-hiddenrea%e2%80%8bdonly-or-visibleed%e2%80%8bitable-on-different-applet-exists-in-same-view-using-browser-script/
SIEBEL: How to make Control Hidden/Rea​dOnly or Visible/Ed​itable on different applet exists in same view using browser script