1 /** Optimized methods for fetching ad-banners via OpenX */
3 /** see: http://enterprisejquery.com/2010/10/how-good-c-habits-can-encourage-bad-javascript-habits-part-1/ */
5 (function( openx, $, undefined ) {
19 openx.show_ads = function(server, zones) {
22 domain = document.location.protocol == 'https:' ? 'https://' + server + ':8443':'http://' + server,
27 * Without this option, jQuery appends an timestamp to every URL, that
28 * is fetched via $.getScript(). This can mess up badly written
29 * third-party-ad-scripts, that assume that the called URL's are not
32 $.ajaxSetup({ cache: true });
34 document.write = document_write;
35 document.writeln = document_write;
37 src += "/www/delivery/spc.php?zones=";
39 /** Only fetch banners, that are really included in this page */
41 $('.oa').each(function() {
45 if (node.hasClass(name)) {
49 src += escape(id + '=' + zones[name] + "|");
54 src += "&nz=1&source=" + escape(OA_source);
55 src += "&r=" + Math.floor(Math.random()*99999999);
56 src += "&block=1&charset=UTF-8";
58 if (window.location) src += "&loc=" + escape(window.location);
59 if (document.referrer) src += "&referer=" + escape(document.referrer);
61 $.getScript(src, init_ads);
63 src = domain + '/www/delivery/fl.js';
71 for (i=0; i<queue.length; i++) {
73 if (typeof(OA_output[id]) != 'undefined' && OA_output[id] != '')
81 function render_ads() {
83 while (ads.length > 0) {
85 var result, src, inline, i;
92 // node.append(id + ": " + node.attr('class'));
95 * If output was added via document.write(), this output must be
96 * rendered before other banner-code from the OpenX-server is rendered!
100 while ((result = /<script/i.exec(OA_output[id])) != null) {
101 node.append(OA_output[id].slice(0,result.index));
102 /** Strip all text before "<script" from OA_output[id] */
103 OA_output[id] = OA_output[id].slice(result.index,OA_output[id].length);
104 result = /^([^>]*)>([\s\S]*?)<\\?\/script>/i.exec(OA_output[id]);
105 if (result == null) {
106 /** Invalid syntax in delivered banner-code: ignoring the rest of this banner-code! */
107 // alert(OA_output[id]);
111 /** Remember iinline-code, if present */
114 /** Strip all text up to and including "</script>" from OA_output[id] */
115 OA_output[id] = OA_output[id].slice(result[0].length,OA_output[id].length);
116 result = /src\s*=\s*['"]([^'"]*)['"]/i.exec(src);
117 if (result == null) {
118 /** script-tag with inline-code: execute inline-code! */
119 result = /^\s*<.*$/m.exec(inline);
120 if (result != null) {
121 /** Remove leading HTML-comments, because IE will stumble otherwise */
122 inline = inline.slice(result[0].length,inline.length);
124 $.globalEval(inline);
125 insert_output(); // << The executed inline-code might have called document.write()!
128 /** script-tag with src-URL! */
129 ads.unshift(id); // << The banner might not be rendered fully, or include more calls to document.write().
130 /** Load the script and halt all work until the script is loaded and executed... */
131 $.getScript(result[1], render_ads); // << jQuery.getScript() generates onload-Handler for _all_ browsers ;)
137 node.append(OA_output[id]);
141 /** All entries from OA_output were rendered */
147 /** This function is used to overwrite document.write and document.writeln */
148 function document_write() {
150 for (var i=0; i<arguments.length; i++)
151 output.push(arguments[i]);
155 * Re-Add the last banner-code to the working-queue, because included
156 * scripts had added markup via document.write(), which is not
158 * Otherwise the added markup would be falsely rendered together with
159 * the markup from the following banner-code.
166 * This function prepends the collected output from calls to
167 * document_write() to the current banner-code.
169 function insert_output() {
171 if (output.length > 0) {
172 output.push(OA_output[id]);
174 for (i=0; i<output.length; i++)
175 OA_output[id] += output[i];
181 } ( window.openx = window.openx || {}, jQuery ));
183 var OA_output = {}; // << Needed, because IE will complain loudly otherwise!