code: function debounce(fn) {
  	    if (!App.vars.debounceTimer) fn.call(this);
  	    if (App.vars.debounceTimer) global.clearTimeout(App.vars.debounceTimer);
  	    App.vars.debounceTimer = global.setTimeout(function() {
  	        App.vars.debounceTimer = null;
  	        fn.call(this);
  	    }, App.setup.debounce);
  	}
docs: Helpers 
  Prevents a function from being called too often, waits until a timer elapses to call it again
  
  @param fn Function to call