$(function(){
	var jwindow, image, offX, offY;
	
	jwindow = $(window);
	image = {
		url:'images/general/bg.jpg',
		width:1920,
		height:1600
	};
	
	offX = (image.width - jwindow.width()) / -2;
	offY = (image.height - jwindow.height()) / -2;
	
	$('body').css({
		backgroundImage:'url(\''+image.url+'\')',
		backgroundPosition:offX+'px '+offY+'px',
		backgroundRepeat:'no-repeat'
	});
});