function setBgr(){	
	var r = screen.height/screen.width;
	if (r > 0.7 && r < 0.9){
		$('#bgr').attr('src','fileadmin/templates/images/bg43.jpg');
	}
	else{
		$('#bgr').attr('src','fileadmin/templates/images/bg1610.jpg');
	}
}
$(window).resize(function() {
	setBgr();
});