Function getElementMix

Picviewer CE+/dist.user.js:13524–13540

(selector, contextNode, doc)

        }

        function getElementMix(selector, contextNode, doc) {
            var ret;
            if (!selector || !contextNode) return ret;
            doc = doc || document;

            var type = typeof selector;
            if (type == 'string') {
                if (isXPath(selector)) {
                    ret = getElementByXpath(selector, contextNode, doc);
                } else {
                    ret = contextNode.parentNode.querySelector(selector);
                }
            } else if (type == 'function') {
                ret = selector(contextNode, doc);
            }
            return ret;
        }

        function launchFullScreen(element) {
            if (element.requestFullscreen) {