jQueryMobile support for different resolutions

I use jQueryMobile for an app to work on iPhone/Android devices. App has some custom images. How can I handle different resolutions? Should I include multiple ve开发者_如何学Pythonrsions of a image? and how to handle this in html5

thank you

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Look at running media queries documentation: http://jquerymobile.com/demos/1.0a4.1/#docs/api/mediahelpers.html