/*

Important:

This is sample code demonstrating API, technology or techniques in development.

Although this sample code has been reviewed for technical accuracy, it is not 

final. Apple is supplying this information to help you plan for the adoption of 

the technologies and programming interfaces described herein. This information 

is subject to change, and software implemented based on this sample code should 

be tested with final operating system software and final documentation. Newer 

versions of this sample code may be provided with future seeds of the API or 

technology. For information about updates to this and other developer 

documentation, view the New & Updated sidebars in subsequent documentation seeds.

*/

/*

File: CardFlip.js

Abstract: Defines JavaScript functionality for the CardFlip sample.

          Triggers transition between the flip states of the card.

Version: 1.0

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*/

/*

    Triggers transition between both states of the card: regular and flipped.

    A card is in a regular state when there is an empty transform applied to it, and 

    otherwise in a flipped state, where there is a rotational transformation applied.

    The CSS "card" class is used when the card is in a regular state. The "card flipped" 

    class is used when the card is in a flipped state.

    This function is called when users tap on the "card" div element. It checks this div's

    current CSS classname attribute. If the current classname is "card," then change it to "card flipped" and "card,"

    ortherwise. 

*/

function flip (event)

{

    var element = event.currentTarget;

    /* Toggle the setting of the classname attribute */

    element.className = (element.className == 'card') ? 'card flipped' : 'card';

}