/* Author: 
	JQUERY
*/

$(function() {   
                
          var theWindow        = $(window),
              $bg              = $("#bg"),
              aspectRatio      = $bg.width() / $bg.height();
                                                                
                 function resizeBg() {
                                
                       if ( (theWindow.width() / theWindow.height()) < aspectRatio ) {
                             $bg
                             .removeClass()
                             .addClass('bgheight');
                                } else {
                                    $bg
                                        .removeClass()
                                        .addClass('bgwidth');
                                }
                                                        
                        }
                                                                
                        theWindow.resize(function() {
                                resizeBg();
                        }).trigger("resize");

		});