Testing webpage on Mobile's emulator

Here is the list of emulators for testing webpages on handheld devices -

Devices	Emulator	Comment
iPhone/iPad	http://labs.blackbaud.com/NetCommunity/article?artid=662	Can be used to test webpages for both iPhone and iPad. Hotkey to switch to modes : ctrl-2
Blackberry	http://us.blackberry.com/developers/resources/simulators.jsp	Different emulators has to be downloaded for different models
Android	http://developer.android.com/sdk/index.html	All the versions are available for testing through a single installer
Symbian	http://apu.ndhub.net/ https://www.deviceanywhere.com/nokia/welcome.htm	All Nokia models are available to test

Even for testing on iPad we can consider Safari browser.

To make sure html markup is valid and it is compatible for mobile, we may use following w3 org service - http://validator.w3.org/mobile