// JavaScript Document

var curImage = 1;

function p_viewer( xflip ) {
	curImage = curImage + xflip;
	
	if (curImage > numImages) { 
		curImage = 1; 
	}
	
	if (curImage == 0) { 
		curImage = numImages; 
	}
	
	document.getElementById('picture-viewer-img').src = imgArray[curImage - 1];
}