diff --git a/code/modules/client/client defines.dm b/code/modules/client/client defines.dm
index 19e8d760d7..b73a5fe290 100644
--- a/code/modules/client/client defines.dm	
+++ b/code/modules/client/client defines.dm	
@@ -81,10 +81,15 @@
 	// Runechat messages
 	var/list/seen_messages
 
+	//Hide top bars
+	var/fullscreen = FALSE
+	//Hide status bar
+	var/show_status_bar = TRUE
+
 		///////////
 		// INPUT //
 		///////////
-	
+
 	/// Bitfield of modifier keys (Shift, Ctrl, Alt) held currently.
 	var/mod_keys_held = 0
 	/// Bitfield of movement keys (WASD/Cursor Keys) held currently.
@@ -108,4 +113,4 @@
 	/// Movement dir of the most recently pressed movement key.  Used in cardinal-only movement mode.
 	var/last_move_dir_pressed = NONE
 
-	#endif
\ No newline at end of file
+	#endif
diff --git a/code/modules/client/client procs.dm b/code/modules/client/client procs.dm
index 0a0b604b48..24df219632 100644
--- a/code/modules/client/client procs.dm	
+++ b/code/modules/client/client procs.dm	
@@ -575,3 +575,36 @@
 	set name = "TguiKeyUp"
 	set hidden = TRUE
 	return // stub
+
+/client/verb/toggle_fullscreen()
+	set name = "Toggle Fullscreen"
+	set category = "OOC"
+
+	fullscreen = !fullscreen
+
+	if (fullscreen)
+		winset(usr, "mainwindow", "on-size=")
+		winset(usr, "mainwindow", "titlebar=false")
+		winset(usr, "mainwindow", "can-resize=false")
+		winset(usr, "mainwindow", "menu=")
+		winset(usr, "mainwindow", "is-maximized=false")
+		winset(usr, "mainwindow", "is-maximized=true")
+	else
+		winset(usr, "mainwindow", "menu=menu")
+		winset(usr, "mainwindow", "titlebar=true")
+		winset(usr, "mainwindow", "can-resize=true")
+		winset(usr, "mainwindow", "is-maximized=false")
+		winset(usr, "mainwindow", "on-size=attempt_auto_fit_viewport") // The attempt_auto_fit_viewport() proc is not implemented yet
+
+/*
+/client/verb/toggle_status_bar()
+	set name = "Toggle Status Bar"
+	set category = "OOC"
+
+	show_status_bar = !show_status_bar
+
+	if (show_status_bar)
+		winset(usr, "input", "is-visible=true")
+	else
+		winset(usr, "input", "is-visible=false")
+*/
diff --git a/tgui/public/tgui.html b/tgui/public/tgui.html
index 07d74341f7..b5fc63f0c8 100644
--- a/tgui/public/tgui.html
+++ b/tgui/public/tgui.html
@@ -301,6 +301,7 @@
     if (type === 'js') {
       var node = document.createElement('script');
       node.type = 'text/javascript';
+      node.crossOrigin = 'anonymous';
       // IE8: Prefer non-https protocols
       node.src = Byond.IS_LTE_IE9
         ? url.replace('https://', 'http://')