n1k0

var page = new WebPage(),
    address, output, size;
    
//capture and captureSelector functions adapted from CasperJS - https://github.com/n1k0/casperjs
capture = function(targetFile, clipRect) {
    var previousClipRect;
    var clipRect = {top: 0, left:0, width: 40, height: 40};
    if (clipRect) {
        if (!isType(clipRect, "object")) {
            throw new Error("clipRect must be an Object instance.");