MediaWiki:Mobile.js

Note: After saving, you may have to bypass your browser's cache to see the changes.

Firefox / Safari: Hold Shift while clicking Reload, or press either Ctrl-F5 or Ctrl-R (⌘-R on a Mac)
Google Chrome: Press Ctrl-Shift-R (⌘-Shift-R on a Mac)
Internet Explorer: Hold Ctrl while clicking Refresh, or press Ctrl-F5
Opera: Go to Menu → Settings (Opera → Preferences on a Mac) and then to Privacy & security → Clear browsing data → Cached images and files.

/* Any JavaScript here will be loaded for users using the mobile site */

if( window.protectedNamespace.indexOf( mw.config.get( 'wgCanonicalNamespace' )) !== -1 ){
    window.location( mw.config.get( 'wgServer' ) + "/wiki/" + mw.config.get("wgPageName") + "&mobileaction=toggle_view_desktop" );
}