Howdy! Welcome to our community of more than 130.000 members devoted to web hosting. This is a great place to get special offers from web hosts and post your own requests or ads. To start posting sign up here. Cheers!
/Peo, FreeWebSpace.net
you can use http code.google.com/p/php-mobile-detect/ script to detect mobile device. you can use wordpress build in feature image functionality to serve optimaze image. here is how you can use it
add_image_size( 'computer', 425, 239, true); // ratio 16:9 sdestop
add_image_size(...