Testing Mobile View in Chrome

1. In Chrome, open the Developer Tools  by clicking "Customize"(wrench icon) --> "Tools" --> "Developer Tools."

2. Click the "Settings" icon at the botom right corner.
3. Check "override user agent" and select one of the options (iPhone, iPad or Nexus S running Android 2.3). You can also select "other" and enter a custom user agent.

The result looks like that: