var ratio = 12/8;

    
function fullBgResize(){
     var bg = $('div.fullBg div img');

	 var toW = $(window).width();     
	 var toH = $(window).height();     
	 
	 var minH = $('div.wrapper').height();
	 var minW = $('div.wrapper').width();
	 
	/*if( (toW<minW) || (toH<minH) ){
		toH = minH;
		toW = minW;
		}*/
	 
     bg.width( toW );
     bg.height( toW / ratio );

     if ( bg.height() < toH ){
        bg.height( toH );
        bg.width( toH * ratio);
        }
     }     
 
$(window).resize(function(){
  fullBgResize();
  }
);

$(window).load(function(){
  fullBgResize();
  }
);

$('div.fullBg div img').resize(function(){
  fullBgResize();
  }
);