/* ............................................................ */
-/* Ajax */
+/* Handling browser incompatibilities */
/**
* Create XMLHttpRequest object in cross-browser way
}
-/* ............................................................ */
-/* time and data */
-
/**
- * used to extract hours and minutes from timezone info, e.g '-0900'
- * @constant
- */
-var tzRe = /^([+-])([0-9][0-9])([0-9][0-9])$/;
-
-/**
- * convert numeric timezone +/-ZZZZ to offset from UTC in seconds
- *
- * @param {String} timezoneInfo: numeric timezone '(+|-)HHMM'
- * @returns {Number} offset from UTC in seconds for timezone
+ * Insert rule giving specified STYLE to given SELECTOR at the end of
+ * first CSS stylesheet.
*
- * @globals tzRe
+ * @param {String} selector: CSS selector, e.g. '.class'
+ * @param {String} style: rule contents, e.g. 'background-color: red;'
*/
-function timezoneOffset(timezoneInfo) {
- var match = tzRe.exec(timezoneInfo);
- var tz_sign = (match[1] === '-' ? -1 : +1);
- var tz_hour = parseInt(match[2],10);
- var tz_min = parseInt(match[3],10);
+function addCssRule(selector, style) {
+ var stylesheet = document.styleSheets[0];
+
+ var theRules = [];
+ if (stylesheet.cssRules) { // W3C way
+ theRules = stylesheet.cssRules;
+ } else if (stylesheet.rules) { // IE way
+ theRules = stylesheet.rules;
+ }
- return tz_sign*(((tz_hour*60) + tz_min)*60);
+ if (stylesheet.insertRule) { // W3C way
+ stylesheet.insertRule(selector + ' { ' + style + ' }', theRules.length);
+ } else if (stylesheet.addRule) { // IE way
+ stylesheet.addRule(selector, style);
+ }
}
+
+/* ............................................................ */
+/* Support for legacy browsers */
+
/**
- * return date in local time formatted in iso-8601 like format
- * 'yyyy-mm-dd HH:MM:SS +/-ZZZZ' e.g. '2005-08-07 21:49:46 +0200'
+ * Provides getElementsByClassName method, if there is no native
+ * implementation of this method.
+ *
+ * NOTE that there are limits and differences compared to native
+ * getElementsByClassName as defined by e.g.:
+ * https://developer.mozilla.org/en/DOM/document.getElementsByClassName
+ * http://www.whatwg.org/specs/web-apps/current-work/multipage/dom.html#dom-getelementsbyclassname
+ * http://www.whatwg.org/specs/web-apps/current-work/multipage/dom.html#dom-document-getelementsbyclassname
+ *
+ * Namely, this implementation supports only single class name as
+ * argument and not set of space-separated tokens representing classes,
+ * it returns Array of nodes rather than live NodeList, and has
+ * additional optional argument where you can limit search to given tags
+ * (via getElementsByTagName).
*
- * @param {Number} epoch: seconds since '00:00:00 1970-01-01 UTC'
- * @param {String} timezoneInfo: numeric timezone '(+|-)HHMM'
- * @returns {String} date in local time in iso-8601 like format
+ * Based on
+ * http://code.google.com/p/getelementsbyclassname/
+ * http://www.dustindiaz.com/getelementsbyclass/
+ * http://stackoverflow.com/questions/1818865/do-we-have-getelementsbyclassname-in-javascript
+ *
+ * See also http://ejohn.org/blog/getelementsbyclassname-speed-comparison/
+ *
+ * @param {String} class: name of _single_ class to find
+ * @param {String} [taghint] limit search to given tags
+ * @returns {Node[]} array of matching elements
*/
-function formatDateISOLocal(epoch, timezoneInfo) {
- // date corrected by timezone
- var localDate = new Date(1000 * (epoch +
- timezoneOffset(timezoneInfo)));
- var localDateStr = // e.g. '2005-08-07'
- localDate.getUTCFullYear() + '-' +
- padLeft(localDate.getUTCMonth()+1, 2, '0') + '-' +
- padLeft(localDate.getUTCDate(), 2, '0');
- var localTimeStr = // e.g. '21:49:46'
- padLeft(localDate.getUTCHours(), 2, '0') + ':' +
- padLeft(localDate.getUTCMinutes(), 2, '0') + ':' +
- padLeft(localDate.getUTCSeconds(), 2, '0');
-
- return localDateStr + ' ' + localTimeStr + ' ' + timezoneInfo;
-}
+if (!('getElementsByClassName' in document)) {
+ document.getElementsByClassName = function (classname, taghint) {
+ taghint = taghint || "*";
+ var elements = (taghint === "*" && document.all) ?
+ document.all :
+ document.getElementsByTagName(taghint);
+ var pattern = new RegExp("(^|\\s)" + classname + "(\\s|$)");
+ var matches= [];
+ for (var i = 0, j = 0, n = elements.length; i < n; i++) {
+ var el= elements[i];
+ if (el.className && pattern.test(el.className)) {
+ // matches.push(el);
+ matches[j] = el;
+ j++;
+ }
+ }
+ return matches;
+ };
+} // end if
/* ............................................................ */