/**
 * 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.
 */

// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var gDefaultPage = "../Common/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
	if (document.getElementById("popCloseBox") != undefined)
	{
		return;
	}
	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="../images/close.png" onclick="hidePopWin(false);" id="popCloseBox" style="width:15px;height:14px"/>' +
				'</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 id="closeBottom">' +
				'<div id="divCloseButton" class="longbutton" style="margin-left:auto; margin-right:auto;">' +
					'<a onclick="hidePopWin(true);" href="javascript:void(0);">Close</a>'
				'</div>'+
			'</div>'+
		'</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, title, showCloseBottom) {
	// show or hide the window close widget
	if (document.getElementById("popCloseBox") == undefined)
	{
		initPopUp();
	}
	document.getElementById("popCloseBox").style.display = (showCloseBox == null || showCloseBox == true) ? "block" : "none";
	document.getElementById("closeBottom").style.display = (showCloseBottom == null || showCloseBottom == false) ? "none" : "block";
	gPopupIsShown = true;
	disableTabIndexes();

	centerPopWin(width, height);
	var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
	gPopupContainer.style.width = width + "px";
	gPopupContainer.style.height = (height + titleBarHeight) + "px";
	
	setMaskSize();
	
	gPopupMask.style.display = 
		gPopupContainer.style.display = "block";

	gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
	gPopFrame.style.height = (height) + "px";
	
	gPopFrame.src = url;
	gReturnFunc = returnFunc;
	// for IE
	if (gHideSelects == true)
		displaySelectBoxes(false);
	document.getElementById("popupTitle").innerHTML = "";
	if (!title) {
		window.setTimeout("setPopTitle();", 600);
	}
	else {
		document.getElementById("popupTitle").innerHTML = title;
	}
}

//
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.getElementsByTagName("BODY")[0];
		var scTop = parseInt(getScrollTop(),10);
		var scLeft = parseInt(theBody.scrollLeft,10);
	
		setMaskSize();
		
		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";
	}
}
//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 = getViewportHeight2();
	var fullWidth = getViewportWidth2();
	
	// 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 = 
		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 = 1; //window.frames["popupFrame"].returnVal;
		window.setTimeout('gReturnFunc(gReturnVal);', 1);
	}
	gPopFrame.src = gDefaultPage;
	// display all select boxes
	if (gHideSelects == true) {
		displaySelectBoxes(true);
	}
}

/**
 * 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() {

	if (window.frames["popupFrame"].document.title == null || window.frames["popupFrame"].document.title == "Loading Content") {
		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";
			}
		}
	}
}

// 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;
			}
		}
	}
}

function displaySelectBoxes(bool) {
	var val = bool ? "visible" : "hidden";
	for(var i = 0; i < document.forms.length; i++) 
		for(var j = 0; j < document.forms[i].length; j++)
			if(document.forms[i].elements[j].tagName == "SELECT") 
				document.forms[i].elements[j].style.visibility = val;
}