jquery toggle functionality

jquery_toggle_functionality.js

jQuery.fn.extend({
toggle: function( fn ) {
        // Save reference to arguments for access in closure
        var args = arguments,
            guid = fn.guid || jQuery.guid++,
            i = 0,
            toggler = function( event ) {
                // Figure out which function to execute
                var lastToggle = ( jQuery._data( this, "lastToggle" + fn.guid ) || 0 ) % i;
                jQuery._data( this, "lastToggle" + fn.guid, lastToggle + 1 );

                // Make sure that clicks stop
                event.preventDefault();

                // and execute the function
                return args[ lastToggle ].apply( this, arguments ) || false;
            };

        // link all the functions, so any of them can unbind this click handler
        toggler.guid = guid;
        while ( i < args.length ) {
            args[ i++ ].guid = guid;
        }

        return this.click( toggler );
    }
});