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define([
        "../core"
], function( jQuery ) {

// A method for quickly swapping in/out CSS properties to get correct calculations.
jQuery.swap = function( elem, options, callback, args ) {
        var ret, name,
                old = {};

        // Remember the old values, and insert the new ones
        for ( name in options ) {
                old[ name ] = elem.style[ name ];
                elem.style[ name ] = options[ name ];
        }

        ret = callback.apply( elem, args || [] );

        // Revert the old values
        for ( name in options ) {
                elem.style[ name ] = old[ name ];
        }

        return ret;
};

return jQuery.swap;

});