dhtml modal popups.
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Matthew Wilson
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339
www/extras/js/modal/modal.js
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339
www/extras/js/modal/modal.js
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/**
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* COMMON DHTML FUNCTIONS
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* These are handy functions I use all the time.
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*
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* By Seth Banks (webmaster at subimage dot com)
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* http://www.subimage.com/
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*
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* Up to date code can be found at http://www.subimage.com/dhtml/
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*
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* This code is free for you to use anywhere, just keep this comment block.
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*/
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/**
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* X-browser event handler attachment and detachment
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* TH: Switched first true to false per http://www.onlinetools.org/articles/unobtrusivejavascript/chapter4.html
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*
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* @argument obj - the object to attach event to
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* @argument evType - name of the event - DONT ADD "on", pass only "mouseover", etc
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* @argument fn - function to call
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*/
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function addEvent(obj, evType, fn){
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if (obj.addEventListener){
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obj.addEventListener(evType, fn, false);
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return true;
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} else if (obj.attachEvent){
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var r = obj.attachEvent("on"+evType, fn);
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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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function removeEvent(obj, evType, fn, useCapture){
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if (obj.removeEventListener){
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obj.removeEventListener(evType, fn, useCapture);
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return true;
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} else if (obj.detachEvent){
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var r = obj.detachEvent("on"+evType, fn);
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return r;
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} else {
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alert("Handler could not be removed");
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}
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}
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/**
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* Code below taken from - http://www.evolt.org/article/document_body_doctype_switching_and_more/17/30655/
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*
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* Modified 4/22/04 to work with Opera/Moz (by webmaster at subimage dot com)
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*
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* Gets the full width/height because it's different for most browsers.
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*/
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function getViewportHeight() {
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if (window.innerHeight!=window.undefined) return window.innerHeight;
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if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
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if (document.body) return document.body.clientHeight;
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return window.undefined;
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}
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function getViewportWidth() {
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if (window.innerWidth!=window.undefined) return window.innerWidth;
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if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth;
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if (document.body) return document.body.clientWidth;
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return window.undefined;
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}
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/**
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* POPUP WINDOW CODE v1.1
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* Used for displaying DHTML only popups instead of using buggy modal windows.
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*
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* By Seth Banks (webmaster at subimage dot com)
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* http://www.subimage.com/
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*
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* Contributions by Eric Angel (tab index code) and Scott (hiding/showing selects for IE users)
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*
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* Up to date code can be found at http://www.subimage.com/dhtml/subModal
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*
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* This code is free for you to use anywhere, just keep this comment block.
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*/
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// Popup code
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var gPopupMask = null;
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var gPopupContainer = null;
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var gPopFrame = null;
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var gReturnFunc;
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var gPopupIsShown = false;
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var gHideSelects = false;
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var gTabIndexes = new Array();
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// Pre-defined list of tags we want to disable/enable tabbing into
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var gTabbableTags = new Array("A","BUTTON","TEXTAREA","INPUT","IFRAME");
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// If using Mozilla or Firefox, use Tab-key trap.
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if (!document.all) {
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document.onkeypress = keyDownHandler;
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}
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/**
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* Initializes popup code on load.
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*/
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function initPopUp(closeImage) {
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// Add the HTML to the body
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body = document.getElementsByTagName('body')[0];
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popmask = document.createElement('div');
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popmask.id = 'popupMask';
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popcont = document.createElement('div');
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popcont.id = 'popupContainer';
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popcont.innerHTML = '' +
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'<div id="popupInner">' +
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'<div id="popupTitleBar">' +
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'<div id="popupTitle"></div>' +
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'<div id="popupControls">' +
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'<img src="'+closeImage+'" onclick="hidePopWin(false);" />' +
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'</div>' +
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'</div>' +
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'<div id="popupFrame"></div>' +
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'</div>';
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body.appendChild(popmask);
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body.appendChild(popcont);
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gPopupMask = document.getElementById("popupMask");
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gPopupContainer = document.getElementById("popupContainer");
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gPopFrame = document.getElementById("popupFrame");
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// check to see if this is IE version 6 or lower. hide select boxes if so
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// maybe they'll fix this in version 7?
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var brsVersion = parseInt(window.navigator.appVersion.charAt(0), 10);
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if (brsVersion <= 6 && window.navigator.userAgent.indexOf("MSIE") > -1) {
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gHideSelects = true;
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}
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// Add onclick handlers to 'a' elements of class submodal or submodal-width-height
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var elms = document.getElementsByTagName('a');
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for (i = 0; i < elms.length; i++) {
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if (elms[i].className.indexOf("submodal") == 0) {
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// var onclick = 'function (){showPopWin(\''+elms[i].href+'\','+width+', '+height+', null);return false;};';
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// elms[i].onclick = eval(onclick);
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elms[i].onclick = function(){
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// default width and height
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var width = 400;
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var height = 200;
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// Parse out optional width and height from className
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params = this.className.split('-');
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if (params.length == 3) {
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width = parseInt(params[1]);
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height = parseInt(params[2]);
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}
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showPopWin(this.href,width,height,null); return false;
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}
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}
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}
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}
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/**
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* @argument width - int in pixels
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* @argument height - int in pixels
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* @argument url - url to display
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* @argument returnFunc - function to call when returning true from the window.
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*/
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function showPopWin(url, width, height, returnFunc) {
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gPopupIsShown = true;
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disableTabIndexes();
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gPopupMask.style.display = "block";
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gPopupContainer.style.display = "block";
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// calculate where to place the window on screen
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centerPopWin(width, height);
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var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
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gPopupContainer.style.width = width + "px";
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gPopupContainer.style.height = (height+titleBarHeight) + "px";
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// need to set the width of the iframe to the title bar width because of the dropshadow
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// some oddness was occuring and causing the frame to poke outside the border in IE6
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gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
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gPopFrame.style.height = (height) + "px";
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// set the url
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var popupFiller = AjaxRequest.get(
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{
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'url':url
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,'onSuccess':function(req){
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gPopFrame.innerHTML = req.responseText;
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}
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}
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);
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gReturnFunc = returnFunc;
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// for IE
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if (gHideSelects == true) {
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hideSelectBoxes();
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}
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window.setTimeout("setPopTitle();", 600);
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}
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//
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var gi = 0;
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function centerPopWin(width, height) {
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if (gPopupIsShown == true) {
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if (width == null || isNaN(width)) {
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width = gPopupContainer.offsetWidth;
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}
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if (height == null) {
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height = gPopupContainer.offsetHeight;
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}
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var fullHeight = getViewportHeight();
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var fullWidth = getViewportWidth();
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var theBody = document.documentElement;
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var scTop = parseInt(theBody.scrollTop,10);
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var scLeft = parseInt(theBody.scrollLeft,10);
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gPopupMask.style.height = fullHeight + "px";
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gPopupMask.style.width = fullWidth + "px";
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gPopupMask.style.top = scTop + "px";
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gPopupMask.style.left = scLeft + "px";
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window.status = gPopupMask.style.top + " " + gPopupMask.style.left + " " + gi++;
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var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
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gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
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gPopupContainer.style.left = (scLeft + ((fullWidth - width) / 2)) + "px";
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//alert(fullWidth + " " + width + " " + gPopupContainer.style.left);
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}
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}
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addEvent(window, "resize", centerPopWin);
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//addEvent(window, "scroll", centerPopWin);
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window.onscroll = centerPopWin;
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/**
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* @argument callReturnFunc - bool - determines if we call the return function specified
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* @argument returnVal - anything - return value
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*/
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function hidePopWin(callReturnFunc) {
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gPopupIsShown = false;
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restoreTabIndexes();
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if (gPopupMask == null) {
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return;
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}
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gPopupMask.style.display = "none";
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gPopupContainer.style.display = "none";
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// if (callReturnFunc == true && gReturnFunc != null) {
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// gReturnFunc(window.frames["popupFrame"].returnVal);
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// }
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// gPopFrame.src = 'loading.html';
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// display all select boxes
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if (gHideSelects == true) {
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displaySelectBoxes();
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}
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}
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/**
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* Sets the popup title based on the title of the html document it contains.
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* Uses a timeout to keep checking until the title is valid.
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*/
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function setPopTitle() {
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if (window.frames["popupFrame"].document.title == null) {
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window.setTimeout("setPopTitle();", 10);
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} else {
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document.getElementById("popupTitle").innerHTML = window.frames["popupFrame"].document.title;
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}
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}
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// Tab key trap. iff popup is shown and key was [TAB], suppress it.
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// @argument e - event - keyboard event that caused this function to be called.
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function keyDownHandler(e) {
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if (gPopupIsShown && e.keyCode == 9) return false;
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}
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// For IE. Go through predefined tags and disable tabbing into them.
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function disableTabIndexes() {
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if (document.all) {
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var i = 0;
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for (var j = 0; j < gTabbableTags.length; j++) {
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var tagElements = document.getElementsByTagName(gTabbableTags[j]);
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for (var k = 0 ; k < tagElements.length; k++) {
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gTabIndexes[i] = tagElements[k].tabIndex;
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tagElements[k].tabIndex="-1";
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i++;
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}
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}
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}
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}
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// For IE. Restore tab-indexes.
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function restoreTabIndexes() {
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if (document.all) {
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var i = 0;
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for (var j = 0; j < gTabbableTags.length; j++) {
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var tagElements = document.getElementsByTagName(gTabbableTags[j]);
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for (var k = 0 ; k < tagElements.length; k++) {
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tagElements[k].tabIndex = gTabIndexes[i];
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tagElements[k].tabEnabled = true;
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i++;
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}
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}
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}
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}
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/**
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* Hides all drop down form select boxes on the screen so they do not appear above the mask layer.
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* IE has a problem with wanted select form tags to always be the topmost z-index or layer
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*
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* Thanks for the code Scott!
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*/
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function hideSelectBoxes() {
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for(var i = 0; i < document.forms.length; i++) {
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for(var e = 0; e < document.forms[i].length; e++){
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if(document.forms[i].elements[e].tagName == "SELECT") {
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document.forms[i].elements[e].style.visibility="hidden";
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}
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}
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}
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}
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/**
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* Makes all drop down form select boxes on the screen visible so they do not reappear after the dialog is closed.
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* IE has a problem with wanted select form tags to always be the topmost z-index or layer
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*/
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function displaySelectBoxes() {
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for(var i = 0; i < document.forms.length; i++) {
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for(var e = 0; e < document.forms[i].length; e++){
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if(document.forms[i].elements[e].tagName == "SELECT") {
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document.forms[i].elements[e].style.visibility="visible";
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}
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}
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}
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}
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