/* Copyright (c) 2007 Paul Bakaus (paul.bakaus@googlemail.com) and Brandon Aaron (brandon.aaron@gmail.com || http://brandonaaron.net)
2	 * Dual licensed under the MIT (http://www.opensource.org/licenses/mit-license.php)
3	 * and GPL (http://www.opensource.org/licenses/gpl-license.php) licenses.
4	 *
5	 * $LastChangedDate$
6	 * $Rev$
7	 *
8	 * Version: @VERSION
9	 *
10	 * Requires: jQuery 1.2+
11	 */
	
	(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 this.css('display') != 'none' ? this[0]['client' + name] : 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 || {});
	       
	        var val = this.css('display') != 'none' ?
	                this[0]['offset' + name] :
	                num( this, name.toLowerCase() )
	                    + num(this, 'border' + torl + 'Width') + num(this, 'border' + borr + 'Width')
	                    + num(this, 'padding' + torl) + num(this, 'padding' + borr);
	       
	        return val + (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($.curCSS(el.jquery?el[0]:el,prop,true))||0;
};
	
})(jQuery);