function resize()
{
  var ratio = 1280/800;
	if( jQuery(window).width() / jQuery(window).height()  > ratio){
	    jQuery('.bgimage').each(function(el){ jQuery(this).css({height: 'auto', width: '100%', display:'block'}) } );
	}else{
            jQuery('.bgimage').each(function(el){ jQuery(this).css({width: 'auto', height: '100%', display:'block'}) } );
	}
}

window.onresize = function (){
	resize();
};