/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
 *
 * $LastChangedDate: 2007-10-06T18:11:15.103402Z $
 * $Rev: 4893 $
 *
 * Version: @VERSION
 *
 * Requires: jQuery 1.2+
 */

(function($){

    $.dimensions = {
        version: '@VERSION'
    };

// Create innerHeight, innerWidth, outerHeight and outerWidth methods
    $.each( [ 'Height', 'Width' ], function(i, name){

        // innerHeight and innerWidth
        $.fn[ 'inner' + name ] = function() {
            if (!this[0]) return;

            var torl = name == 'Height' ? 'Top'    : 'Left',  // top or left
                borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right

            return num( this, name.toLowerCase() ) + num(this, 'padding' + torl) + num(this, 'padding' + borr);
        };

        // outerHeight and outerWidth
        $.fn[ 'outer' + name ] = function(options) {
            if (!this[0]) return;

            var torl = name == 'Height' ? 'Top'    : 'Left',  // top or left
                borr = name == 'Height' ? 'Bottom' : 'Right'; // bottom or right

            options = $.extend({ margin: false }, options || {});

            return num( this, name.toLowerCase() )
                + num(this, 'border' + torl + 'Width') + num(this, 'border' + borr + 'Width')
                + num(this, 'padding' + torl) + num(this, 'padding' + borr)
                + (options.margin ? (num(this, 'margin' + torl) + num(this, 'margin' + borr)) : 0);
        };
    });

// Create scrollLeft and scrollTop methods
    $.each( ['Left', 'Top'], function(i, name) {
        $.fn[ 'scroll' + name ] = function(val) {
            if (!this[0]) return;

            return val != undefined ?

                // Set the scroll offset
                this.each(function() {
                    this == window || this == document ?
                        window.scrollTo(
                            name == 'Left' ? val : $(window)[ 'scrollLeft' ](),
                            name == 'Top'  ? val : $(window)[ 'scrollTop'  ]()
                        ) :
                        this[ 'scroll' + name ] = val;
                }) :

                // Return the scroll offset
                this[0] == window || this[0] == document ?
                    self[ (name == 'Left' ? 'pageXOffset' : 'pageYOffset') ] ||
                        $.boxModel && document.documentElement[ 'scroll' + name ] ||
                        document.body[ 'scroll' + name ] :
                    this[0][ 'scroll' + name ];
        };
    });

    $.fn.extend({
        position: function() {
            var left = 0, top = 0, elem = this[0], offset, parentOffset, offsetParent, results;

            if (elem) {
                // Get *real* offsetParent
                offsetParent = this.offsetParent();

                // Get correct offsets
                offset       = this.offset();
                parentOffset = offsetParent.offset();

                // Subtract element margins
                offset.top  -= num(elem, 'marginTop');
                offset.left -= num(elem, 'marginLeft');

                // Add offsetParent borders
                parentOffset.top  += num(offsetParent, 'borderTopWidth');
                parentOffset.left += num(offsetParent, 'borderLeftWidth');

                // Subtract the two offsets
                results = {
                    top:  offset.top  - parentOffset.top,
                    left: offset.left - parentOffset.left
                };
            }

            return results;
        },

        offsetParent: function() {
            var offsetParent = this[0].offsetParent;
            while ( offsetParent && (!/^body|html$/i.test(offsetParent.tagName) && $.css(offsetParent, 'position') == 'static') )
                offsetParent = offsetParent.offsetParent;
            return $(offsetParent);
        }
    });

    function num(el, prop) {
        return parseInt($.css(el.jquery?el[0]:el,prop))||0;
    }

})(jQuery);