how to call a URL on a button click?

[coooolmagic]

hi all

I have a button, how can I call a URL on click of it.
This button is part of a form panel.

lets say I want to open http://www.sencha.com on click of it

[tysoncadenhead]

{
   xtype: 'button',
   text: 'My Button',
   handler: function(){
      window.location = 'http://sencha.com';
   }
}

[Animal]

That is not a good solution.

Setting window.location is not friendly to the user.

The user does not know that is supposed to be a link (you usually get a status bar telling you what a click would do)

Also, you cannot right click it.

The best solution is a LinkButton