/* 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. 
  * 
  * $LastChangedDate$ 
  * $Rev$ 
  * 
  * 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 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);