emulating mobile browsers on Os X

what's the best way to emulate iPhone's Mobile Safari and Android's browser on Oxs X ? I've tried some stuff, but it's not reliable and doesn't match 100% th开发者_开发问答e renderning on the mobile devices.

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For android you can download SDK, and run the browser from the emulator. This will get you exactly the browser that will run on the device.

http://developer.android.com/sdk/index.html

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For mobile safari, you need the iOS SDK:

http://developer.apple.com/iphone/index.action

Which has the iPhone and iPad emulators built in.

Not sure about android on OSX