Storyline Toggle Fullscreen Mode in Web Browser

Compatible with HTML5 compliant browsers only. Tested on Chrome 57 for Windows and Chrome for Android Nougat (Storyline 3)

Proof of concept:

https://cruzrincon.github.io/Fullscreen/story_html5.html

Instructions: Assign the following Javascript to be executed via Trigger:

if ((document.fullScreenElement && document.fullScreenElement !== null) || 
 (!document.mozFullScreen && !document.webkitIsFullScreen)) {
 if (document.documentElement.requestFullScreen) { 
 document.documentElement.requestFullScreen(); 
 } else if (document.documentElement.mozRequestFullScreen) { 
 document.documentElement.mozRequestFullScreen(); 
 } else if (document.documentElement.webkitRequestFullScreen) { 
 document.documentElement.webkitRequestFullScreen(Element.ALLOW_KEYBOARD_INPUT); 
 } 
 } else { 
 if (document.cancelFullScreen) { 
 document.cancelFullScreen(); 
 } else if (document.mozCancelFullScreen) { 
 document.mozCancelFullScreen(); 
 } else if (document.webkitCancelFullScreen) { 
 document.webkitCancelFullScreen(); 
 } 
 }