var instance = -1;
var backgrounds = [];
backgrounds[0] = '/bnrPhotos/LibeSlope.jpg';
backgrounds[1] = '/bnrPhotos/bbLakeWinter.jpg';
backgrounds[2] = '/bnrPhotos/bbLakeSpring.jpg';
backgrounds[3] = '/bnrPhotos/bbLakeFall.jpg';

var back = 'section#banner';
var front =  'section#banner2';

var fadeTime = 1000;

function changeBackground() {
	instance++;
		
	if (instance >= backgrounds.length) {
		instance=0;
	}
		
	if (instance==0) {
		$(front).fadeOut(fadeTime);
		setTimeout("chgBg(front,2)",fadeTime);
	}
	
	if (instance==1) {
		$(front).fadeIn(fadeTime);
		setTimeout("chgBg(back,3)",fadeTime);
	}	

	if (instance==2) {
		$(front).fadeOut(fadeTime);
		setTimeout("chgBg(front,0)",fadeTime);
	}
	
	if (instance==3) {
		$(front).fadeIn(fadeTime);
		setTimeout("chgBg(back,1)",fadeTime);
	}	

}

function chgBg(imgPos,towhat) {
	$(imgPos).css({'background-image' : "url('" + backgrounds[towhat] + "')"})	
}

$(document).ready(function() {
	self.setInterval("changeBackground()", 4000)
});