allowing@koken Boulevard previous click to return to beginning of #album-intro

scrollTo_for_boulevard

var scrollTo = function() {

  	if ( imgViewing >= totalImgs ) {
			imgViewing = ( totalImgs - 1 );
		} else if ( imgViewing < 0 ) {
			imgViewing = 0;
		}

		var newLeftPos = $('#lane img:eq(' + imgViewing + ')').closest('.cell').offset().left;

		if (imgViewing === 0 && $('#album-intro').length) {
			newLeftPos = 0;
		}

		$('html,body').stop().animate({
			scrollLeft: ( newLeftPos - 80 )
		}, 400, function(x, t, b, c, d) {
			var s=1.70158;var p=0;var a=c;
			if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
			if (a < Math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*Math.PI) * Math.asin (c/a);
			if (t < 1) return -.5*(a*Math.pow(2,10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )) + b;
			return a*Math.pow(2,-10*(t-=1)) * Math.sin( (t*d-s)*(2*Math.PI)/p )*.5 + c + b;
		});

	}