/* ============================================================ National Geographic Global Helpers JavaScript * Created by Brian Talbot on 2008-08-05. * Copyright (c) 2008 National Geographic. All rights reserved. Notes: ================ * 2008-08-05 - Began list of global helpers * 2008-08-07 - Added current Video Player Popups * 2009-11-10 - Added workaround for broken 'addLoadEvent' when helpers.js is loaded before the tag/prior window.onload events (-bgraham) * 2010-01-26 - Fixed workaround for broken 'addLoadEvent' when helpers.js is loaded before the tag/prior to window.onload events (-bgraham) In This File: ================ +addLoadEvent +insertAfter +getElementsByClassName +addClassName +removeClassName +appendToTitle +setOnClick +popUp +prepareLinks_kvp +popUp_kvp (Kids Video Player) +prepareLinks_vp +popUp_vp (Video Player) +onloadFunctions +initOnPageLoad ============================================================ */ /* ------------------------------------------------------------ +addLoadEvent ------------------------------------------------------------ */ // addLoadEvent is a function made by Simon Willison that serves as a manageable window.onload replacement. // function addLoadEvent(func) { var oldonload = window.onload; if (typeof window.onload != 'function') { window.onload = func; } else { window.onload = function() { oldonload(); func(); } } } /* ------------------------------------------------------------ +insertAfter ------------------------------------------------------------ */ function insertAfter(newElement,targetElement) { var parent = targetElement.parentNode; if (parent.lastChild == targetElement) { parent.appendChild(newElement); } else { parent.insertBefore(newElement,targetElement.nextSibling); } } /* ------------------------------------------------------------ +getElementsByClassName ------------------------------------------------------------ */ // A function that allows us to retrieve elements by their class name // function getElementsByClassName(oElm, strTagName, strClassName){ var arrElements = (strTagName == "*" && oElm.all)? oElm.all : oElm.getElementsByTagName(strTagName); var arrReturnElements = new Array(); strClassName = strClassName.replace(/\-/g, "\\-"); var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)"); var oElement; for(var i=0; i 0)? " " : "") + strClassName; } } /* ------------------------------------------------------------ +removeClassName ------------------------------------------------------------ */ // A function that allows an easy way to remove class names // function removeClassName(oElm, strClassName){ var oClassToRemove = new RegExp((strClassName + "\s?"), "i"); oElm.className = oElm.className.replace(oClassToRemove, "").replace(/^\s?|\s?$/g, ""); } /* ------------------------------------------------------------ +appendToTitle ------------------------------------------------------------ */ // Appends to the title attribute of the element supplied (usually an element/link) the text string supplied function appendToTitle(link,appendText) { var curTitleText = link.getAttribute("title"); link.setAttribute("title",((curTitleText==null)?"":curTitleText+" - ") + appendText); } /* ------------------------------------------------------------ +setOnClick ------------------------------------------------------------ */ // Sets the onclick event of the element supplied (usually an element/link) to the function supplied function setOnClick(link,onclickFunction) { link.onclick = onclickFunction; } /* ------------------------------------------------------------ +popUp ------------------------------------------------------------ */ // An accessible way to open links in new windows // function popUp() { var links = getElementsByClassName(document, "a", "popup"); for (var i=0; i elements to popup the NG Kids Video Player function prepareLinks_kvp() { if (!document.getElementsByTagName) return false; var links = document.getElementsByTagName("a"); for (var i=0; i elements to popup the current NG Video Player function prepareLinks_vp() { if (!document.getElementsByTagName) return false; var links = document.getElementsByTagName("a"); for (var i=0; i TAG AND DEFINE SOME NON-CONFLICTING 'onload' FUNCTIONS IF SO if(typeof(document.body)=="undefined"||!document.body) { /* ------------------------------------------------------------ +initOnPageLoad ------------------------------------------------------------ */ // A cross-browser 'document.ready' type functionality w/out jQuery's $(document).ready(function{}); function initOnPageLoad() { if (arguments.callee.done) return; arguments.callee.done = true; if (initOnPageLoadTmr) clearInterval(initOnPageLoadTmr); onloadFunctions(); }; /* Internet Explorer */ /*@cc_on @*/ /*@if (@_win32) document.write("