How to make google pie chart api background transparent

The transparent background can be set with:

    var options = {backgroundColor: 'transparent',
                   'width':400,
                   'height':300};

You can also set the title there:

    var options = {backgroundColor: 'transparent',
                   'width':400,
                   'height':300,
                   'title' : 'My Chart'};

Edit: To set the right hand items to show at the bottom use:

    var options = {backgroundColor: 'transparent',
                   'width':400,
                   'height':300,
                   'title' : 'My Chart'
                   legend : { position : 'bottom' }
                   };

The list of possible options are here.