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.

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

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