122 lines
3.5 KiB
JavaScript
122 lines
3.5 KiB
JavaScript
// JavaScript Document
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/*
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* Cross-browser event handling, by Scott Andrew
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*/
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function addEvent(element, eventType, lamdaFunction, useCapture) {
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if (element.addEventListener) {
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element.addEventListener(eventType, lamdaFunction, useCapture);
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return true;
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} else if (element.attachEvent) {
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var r = element.attachEvent('on' + eventType, lamdaFunction);
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return r;
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} else {
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return false;
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}
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}
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/*
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* Kills an event's propagation and default action
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*/
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function knackerEvent(eventObject) {
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if (eventObject && eventObject.stopPropagation) {
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eventObject.stopPropagation();
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}
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if (window.event && window.event.cancelBubble ) {
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window.event.cancelBubble = true;
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}
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if (eventObject && eventObject.preventDefault) {
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eventObject.preventDefault();
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}
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if (window.event) {
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window.event.returnValue = false;
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}
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}
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/*
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* Safari doesn't support canceling events in the standard way, so we must
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* hard-code a return of false for it to work.
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*/
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function cancelEventSafari() {
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return false;
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}
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/*
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* Cross-browser style extraction, from the JavaScript & DHTML Cookbook
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* <http://www.oreillynet.com/pub/a/javascript/excerpt/JSDHTMLCkbk_chap5/index5.html>
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*/
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function getElementStyle(elementID, CssStyleProperty) {
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var element = document.getElementById(elementID);
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if (element.currentStyle) {
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return element.currentStyle[toCamelCase(CssStyleProperty)];
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} else if (window.getComputedStyle) {
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var compStyle = window.getComputedStyle(element, '');
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return compStyle.getPropertyValue(CssStyleProperty);
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} else {
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return '';
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}
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}
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/*
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* CamelCases CSS property names. Useful in conjunction with 'getElementStyle()'
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* From <http://dhtmlkitchen.com/learn/js/setstyle/index4.jsp>
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*/
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function toCamelCase(CssProperty) {
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var stringArray = CssProperty.toLowerCase().split('-');
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if (stringArray.length == 1) {
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return stringArray[0];
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}
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var ret = (CssProperty.indexOf("-") == 0)
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? stringArray[0].charAt(0).toUpperCase() + stringArray[0].substring(1)
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: stringArray[0];
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for (var i = 1; i < stringArray.length; i++) {
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var s = stringArray[i];
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ret += s.charAt(0).toUpperCase() + s.substring(1);
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}
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return ret;
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}
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/*
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* Disables all 'test' links, that point to the href '#', by Ross Shannon
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*/
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function disableTestLinks() {
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var pageLinks = document.getElementsByTagName('a');
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for (var i=0; i<pageLinks.length; i++) {
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if (pageLinks[i].href.match(/[^#]#$/)) {
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addEvent(pageLinks[i], 'click', knackerEvent, false);
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}
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}
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}
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/*
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* Cookie functions
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*/
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function createCookie(name, value, days) {
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var expires = '';
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if (days) {
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var date = new Date();
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date.setTime(date.getTime() + (days*24*60*60*1000));
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var expires = '; expires=' + date.toGMTString();
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}
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document.cookie = name + '=' + value + expires + '; path=/';
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}
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function readCookie(name) {
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var cookieCrumbs = document.cookie.split(';');
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var nameToFind = name + '=';
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for (var i = 0; i < cookieCrumbs.length; i++) {
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var crumb = cookieCrumbs[i];
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while (crumb.charAt(0) == ' ') {
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crumb = crumb.substring(1, crumb.length); /* delete spaces */
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}
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if (crumb.indexOf(nameToFind) == 0) {
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return crumb.substring(nameToFind.length, crumb.length);
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}
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}
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return null;
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}
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function eraseCookie(name) {
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createCookie(name, '', -1);
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} |