Robin Good: If you are working to optimize or design your web site for proper display on mobile screens, tablets and smartphone devices this test control page will be able to provide you wirh an immediate check up on how you will content will look across differently sized mobile screens.
Just type the URL of your web site and your page will be displayed immediately at 240/320/480/768/1024 pixel-width sizes in one long horizontal screen.
The service is free to use and requires no registration.
Try it out now: http://mattkersley.com/responsive/
Via Robin Good