Here’s a simple trick that lets you launch the Windows Phone 8 Emulator without using Visual Studio 2012.
It’s quite simple:
Open “Command Prompt” in Administrator mode (right click on it on the Start page icon, choose Run as administrator)
Launch the emulator using the following command (with quotes):
"C:\Program Files (x86)\Microsoft XDE\8.0\xde" -vhd "C:\Program Files (x86)\Microsoft SDKs\Windows Phone\v8.0\Emulation\Images\Flash.vhd"
This will launch the Windows Phone emulator so you can easily test you mobile website without going through Visual Studio. As a rule of thumb, Internet Explorer for Windows Phone behaves like its desktop counterpart, but you should still test it just to be sure.