addEvent(window, "load", updateBackgroundScale);
addEvent(window, "resize", updateBackgroundScale);

function updateBackgroundScale(e)
{
	var windowRatio	= window.innerWidth / window.innerHeight;
	var imageRatio	= 2560/1440;
	
	if(windowRatio > imageRatio)
	{
		$("body").addClass("resizeBasedOnWidth");
		$("body").removeClass("resizeBasedOnHeight");
		document.body.style.backgroundSize	= "100% auto";
	}
	else
	{
		$("body").removeClass("resizeBasedOnWidth");
		$("body").addClass("resizeBasedOnHeight");
		document.body.style.backgroundSize	= "auto 100%";
	}
}