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 ) {
18 openx.show_ads = function(server, zones) {
20 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 src += "/www/delivery/spc.php?zones=";
36 /** Only fetch banners, that are really included in this page */
38 $('.oa').each(function() {
42 if (node.hasClass(name)) {
46 src += escape(id + '=' + zones[name] + "|");
51 if (typeof OA_source !== 'undefined')
52 src += "&source=" + escape(OA_source);
53 src += "&nz=1&r=" + Math.floor(Math.random()*99999999);
54 src += "&block=1&charset=UTF-8";
56 if (window.location) src += "&loc=" + escape(window.location);
57 if (document.referrer) src += "&referer=" + escape(document.referrer);
59 $.getScript(src, load_flash);
63 function load_flash() {
65 $.getScript(domain + '/www/delivery/fl.js', init_ads);
72 for (i=0; i<queue.length; i++) {
74 if (typeof(OA_output[id]) != 'undefined' && OA_output[id] != '')
78 document.write = document_write;
79 document.writeln = document_write;
85 function render_ads() {
87 while (ads.length > 0) {
89 var result, src, inline, i;
96 // node.append(id + ": " + node.attr('class'));
99 * If output was added via document.write(), this output must be
100 * rendered before other banner-code from the OpenX-server is rendered!
104 while ((result = /<script/i.exec(OA_output[id])) != null) {
105 node.append(OA_output[id].slice(0,result.index));
106 /** Strip all text before "<script" from OA_output[id] */
107 OA_output[id] = OA_output[id].slice(result.index,OA_output[id].length);
108 result = /^([^>]*)>([\s\S]*?)<\\?\/script>/i.exec(OA_output[id]);
109 if (result == null) {
110 /** Invalid syntax in delivered banner-code: ignoring the rest of this banner-code! */
111 // alert(OA_output[id]);
115 /** Remember iinline-code, if present */
116 src = result[1] + ' ' // << simplifies the following regular expression: the string ends with a space in any case, so that the src-URL cannot be followed by the end of the string emediately!
118 /** Strip all text up to and including "</script>" from OA_output[id] */
119 OA_output[id] = OA_output[id].slice(result[0].length,OA_output[id].length);
120 result = /src\s*=\s*['"]?([^'"]*)['"]?\s/i.exec(src);
121 if (result == null) {
122 /** script-tag with inline-code: execute inline-code! */
123 result = /^\s*<.*$/m.exec(inline);
124 if (result != null) {
125 /** Remove leading HTML-comments, because IE will stumble otherwise */
126 inline = inline.slice(result[0].length,inline.length);
128 $.globalEval(inline);
129 insert_output(); // << The executed inline-code might have called document.write()!
132 /** script-tag with src-URL! */
133 if (OA_output[id].length > 0)
134 /** The banner-code was not rendered completely yet! */
136 /** Load the script and halt all work until the script is loaded and executed... */
137 $.getScript(result[1], render_ads); // << jQuery.getScript() generates onload-Handler for _all_ browsers ;)
143 node.append(OA_output[id]);
147 /** All entries from OA_output were rendered */
153 /** This function is used to overwrite document.write and document.writeln */
154 function document_write() {
159 for (var i=0; i<arguments.length; i++)
160 output.push(arguments[i]);
164 * Re-Add the last banner-code to the working-queue, because included
165 * scripts had added markup via document.write(), which is not
167 * Otherwise the added markup would be falsely rendered together with
168 * the markup from the following banner-code.
175 * This function prepends the collected output from calls to
176 * document_write() to the current banner-code.
178 function insert_output() {
180 if (output.length > 0) {
181 output.push(OA_output[id]);
183 for (i=0; i<output.length; i++)
184 OA_output[id] += output[i];
190 } ( window.openx = window.openx || {}, jQuery ));
192 var OA_output = {}; // << Needed, because IE will complain loudly otherwise!