/**
 * SUBMODAL v1.5
 * Used for displaying DHTML only popups instead of using buggy modal windows.
 *
 * By Seth Banks
 * http://www.subimage.com/
 *
 * Contributions by:
 * Eric Angel - tab index code
 * Scott - hiding/showing selects for IE users
 * Todd Huss - inserting modal dynamically and anchor classes
 *
 * Up to date code can be found at http://www.subimage.com/dhtml/subModal
 *
 *
 * This code is free for you to use anywhere, just keep this comment block.
 */

// common

function addEvent(obj, evType, fn){
 if (obj.addEventListener){
 obj.addEventListener(evType, fn, false);
 return true;
 } else if (obj.attachEvent){
 var r = obj.attachEvent("on"+evType, fn);
 return r;
 } else {
 return false;
 }
}
function removeEvent(obj, evType, fn, useCapture){
 if (obj.removeEventListener){
 obj.removeEventListener(evType, fn, useCapture);
 return true;
 } else if (obj.detachEvent){
 var r = obj.detachEvent("on"+evType, fn);
 return r;
 } else {
 alert("Handler could not be removed");
 }
}

/**
 * Code below taken from - http://www.evolt.org/article/document_body_doctype_switching_and_more/17/30655/
 *
 * Modified 4/22/04 to work with Opera/Moz (by webmaster at subimage dot com)
 *
 * Gets the full width/height because it's different for most browsers.
 */
function getViewportHeight() {
 if (window.innerHeight!=window.undefined) return window.innerHeight;
 if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
 if (document.body) return document.body.clientHeight;

 return window.undefined;
}
function getViewportWidth() {
 var offset = 17;
 var width = null;
 if (window.innerWidth!=window.undefined) return window.innerWidth;
 if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth;
 if (document.body) return document.body.clientWidth;
}

/**
 * Gets the real scroll top
 */
function getScrollTop() {
 if (self.pageYOffset) // all except Explorer
 {
 return self.pageYOffset;
 }
 else if (document.documentElement && document.documentElement.scrollTop)
 // Explorer 6 Strict
 {
 return document.documentElement.scrollTop;
 }
 else if (document.body) // all other Explorers
 {
 return document.body.scrollTop;
 }
}
function getScrollLeft() {
 if (self.pageXOffset) // all except Explorer
 {
 return self.pageXOffset;
 }
 else if (document.documentElement && document.documentElement.scrollLeft)
 // Explorer 6 Strict
 {
 return document.documentElement.scrollLeft;
 }
 else if (document.body) // all other Explorers
 {
 return document.body.scrollLeft;
 }
}




// common


// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var gDefaultPage = "/scripts/submodal/loading.html";
var gHideSelects = false;
var gReturnVal = null;

var gTabIndexes = new Array();
// Pre-defined list of tags we want to disable/enable tabbing into
var gTabbableTags = new Array("A","BUTTON","TEXTAREA","INPUT","IFRAME");

// If using Mozilla or Firefox, use Tab-key trap.
if (!document.all) {
 document.onkeypress = keyDownHandler;
}



/**
 * Initializes popup code on load.
 */
function initPopUp() {
 // Add the HTML to the body
 theBody = document.getElementsByTagName('BODY')[0];
 popmask = document.createElement('div');
 popmask.id = 'popupMask';
 popcont = document.createElement('div');
 popcont.id = 'popupContainer';
 popcont.innerHTML = '' +
 '<div id="popupInner">' +
 '<div id="popupTitleBar">' +
 '<div id="popupTitle"></div>' +
 '<div id="popupControls">' +
 '<img src="/scripts/submodal/close.gif" onclick="hidePopWin(false);" id="popCloseBox" />' +
 '</div>' +
 '</div>' +
 '<iframe src="'+ gDefaultPage +'" style="width:100%;height:100%;background-color:transparent;" scrolling="auto" frameborder="0" allowtransparency="true" id="popupFrame" name="popupFrame" width="100%" height="100%"></iframe>' +
 '</div>';
 theBody.appendChild(popmask);
 theBody.appendChild(popcont);

 gPopupMask = document.getElementById("popupMask");
 gPopupContainer = document.getElementById("popupContainer");
 gPopFrame = document.getElementById("popupFrame");

 // check to see if this is IE version 6 or lower. hide select boxes if so
 // maybe they'll fix this in version 7?
 var brsVersion = parseInt(window.navigator.appVersion.charAt(0), 10);
 if (brsVersion <= 6 && window.navigator.userAgent.indexOf("MSIE") > -1) {
 gHideSelects = true;
 }

 // Add onclick handlers to 'a' elements of class submodal or submodal-width-height
 var elms = document.getElementsByTagName('a');
 for (i = 0; i < elms.length; i++) {
 if (elms[i].className.indexOf("submodal") == 0) {
 // var onclick = 'function (){showPopWin(\''+elms[i].href+'\','+width+', '+height+', null);return false;};';
 // elms[i].onclick = eval(onclick);
 elms[i].onclick = function(){
 // default width and height
var width = 400;
 var height = 200;
 // Parse out optional width and height from className
 params = this.className.split('-');
 if (params.length == 3) {
 width = parseInt(params[1]);
 height = parseInt(params[2]);
 }
 showPopWin(this.href,width,height,null); return false;
 }
}
 }
}
addEvent(window, "load", initPopUp);

 /**
 * @argument width - int in pixels
 * @argument height - int in pixels
 * @argument url - url to display
 * @argument returnFunc - function to call when returning true from the window.
 * @argument showCloseBox - show the close box - default true
 */

function showPopWin(url, width, height, returnFunc, showCloseBox) {
 // show or hide the window close widget
 if (showCloseBox == null || showCloseBox == true) {
 document.getElementById("popCloseBox").style.display = "block";
 } else {
 document.getElementById("popCloseBox").style.display = "none";
 }
 gPopupIsShown = true;
 disableTabIndexes();
 gPopupMask.style.display = "block";
 gPopupContainer.style.display = "block";
 // calculate where to place the window on screen
 centerPopWin(width, height);

 var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);


 gPopupContainer.style.width = width + "px";
 gPopupContainer.style.height = (height+titleBarHeight) + "px";

 setMaskSize();

 // need to set the width of the iframe to the title bar width because of the dropshadow
 // some oddness was occuring and causing the frame to poke outside the border in IE6
 gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
 gPopFrame.style.height = (height) + "px";

 // set the url
 gPopFrame.src = url;

 gReturnFunc = returnFunc;
 // for IE
 if (gHideSelects == true) {
 hideSelectBoxes();
 }

 window.setTimeout("setPopTitle();", 600);
}

//
var gi = 0;
function centerPopWin(width, height) {
 if (gPopupIsShown == true) {
 if (width == null || isNaN(width)) {
 width = gPopupContainer.offsetWidth;
 }
 if (height == null) {
 height = gPopupContainer.offsetHeight;
 }

 //var theBody = document.documentElement;
 var theBody = document.getElementsByTagName("BODY")[0];
 //theBody.style.overflow = "hidden";
 var scTop = parseInt(getScrollTop(),10);
 var scLeft = parseInt(theBody.scrollLeft,10);

 setMaskSize();

 //window.status = gPopupMask.style.top + " " + gPopupMask.style.left + " " + gi++;

 var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);

 var fullHeight = getViewportHeight();
 var fullWidth = getViewportWidth();

 gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
 gPopupContainer.style.left = (scLeft + ((fullWidth - width) / 2)) + "px";
 //alert(fullWidth + " " + width + " " + gPopupContainer.style.left);
 }
}
addEvent(window, "resize", centerPopWin);
addEvent(window, "scroll", centerPopWin);
window.onscroll = centerPopWin;


/**
 * Sets the size of the popup mask.
 *
 */
function setMaskSize() {
 var theBody = document.getElementsByTagName("BODY")[0];

 var fullHeight = getViewportHeight();
 var fullWidth = getViewportWidth();

 // Determine what's bigger, scrollHeight or fullHeight / width
 if (fullHeight > theBody.scrollHeight) {
 popHeight = fullHeight;
 } else {
 popHeight = theBody.scrollHeight;
 }

 if (fullWidth > theBody.scrollWidth) {
 popWidth = fullWidth;
 } else {
 popWidth = theBody.scrollWidth;
 }

 gPopupMask.style.height = popHeight + "px";
 gPopupMask.style.width = popWidth + "px";
}

/**
 * @argument callReturnFunc - bool - determines if we call the return function specified
 * @argument returnVal - anything - return value
 */
function hidePopWin(callReturnFunc) {
 gPopupIsShown = false;
 var theBody = document.getElementsByTagName("BODY")[0];
 theBody.style.overflow = "";
 restoreTabIndexes();
 if (gPopupMask == null) {
 return;
 }
 gPopupMask.style.display = "none";
 gPopupContainer.style.display = "none";
 if (callReturnFunc == true && gReturnFunc != null) {
 // Set the return code to run in a timeout.
 // Was having issues using with an Ajax.Request();
 gReturnVal = window.frames["popupFrame"].returnVal;
 window.setTimeout('gReturnFunc(gReturnVal);', 1);
 }
 gPopFrame.src = gDefaultPage;
 // display all select boxes
 if (gHideSelects == true) {
 displaySelectBoxes();
 }
}

/**
 * Sets the popup title based on the title of the html document it contains.
 * Uses a timeout to keep checking until the title is valid.
 */
function setPopTitle() {
 /* DABS: return;*/
 if (window.frames["popupFrame"].document.title == null) {
 window.setTimeout("setPopTitle();", 10);
 } else {
 document.getElementById("popupTitle").innerHTML = window.frames["popupFrame"].document.title;
 }
}

// Tab key trap. iff popup is shown and key was [TAB], suppress it.
// @argument e - event - keyboard event that caused this function to be called.
function keyDownHandler(e) {
 if (gPopupIsShown && e.keyCode == 9) return false;
}

// For IE. Go through predefined tags and disable tabbing into them.
function disableTabIndexes() {
 if (document.all) {
 var i = 0;
 for (var j = 0; j < gTabbableTags.length; j++) {
 var tagElements = document.getElementsByTagName(gTabbableTags[j]);
 for (var k = 0 ; k < tagElements.length; k++) {
 gTabIndexes[i] = tagElements[k].tabIndex;
 tagElements[k].tabIndex="-1";
 i++;
}
}
 }
}

// For IE. Restore tab-indexes.
function restoreTabIndexes() {
 if (document.all) {
 var i = 0;
 for (var j = 0; j < gTabbableTags.length; j++) {
 var tagElements = document.getElementsByTagName(gTabbableTags[j]);
 for (var k = 0 ; k < tagElements.length; k++) {
 tagElements[k].tabIndex = gTabIndexes[i];
 tagElements[k].tabEnabled = true;
 i++;
 }
 }
 }
}


/**
* Hides all drop down form select boxes on the screen so they do not appear above the mask layer.
* IE has a problem with wanted select form tags to always be the topmost z-index or layer
*
* Thanks for the code Scott!
*/
function hideSelectBoxes() {
 for(var i = 0; i < document.forms.length; i++) {
 for(var e = 0; e < document.forms[i].length; e++){
 if(document.forms[i].elements[e].tagName == "SELECT") {
 document.forms[i].elements[e].style.visibility="hidden";
 }
 }
 }
}

/**
* Makes all drop down form select boxes on the screen visible so they do not reappear after the dialog is closed.
* IE has a problem with wanted select form tags to always be the topmost z-index or layer
*/
function displaySelectBoxes() {
 for(var i = 0; i < document.forms.length; i++) {
 for(var e = 0; e < document.forms[i].length; e++){
 if(document.forms[i].elements[e].tagName == "SELECT") {
 document.forms[i].elements[e].style.visibility="visible";
 }
 }
 }
}