/**
 * SUBMODAL v1.6
 * Used for displaying DHTML only popups instead of using buggy modal windows.
 *
 * By Subimage LLC
 * 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://submodal.googlecode.com
 *
 * Many Changes by
 *  Saikat Podder
 *  For Specific Needs in GotFreeCards.com
 */

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

//var mouseIn = false;
var scrollBarWidth = 18;

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() {
	//alert('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="http://www.got-free-ecards.com/images/close.gif" onclick="hidePopWin(false);" id="popCloseBox" />' +
				'</div>' +
			'</div>' +
			'<iframe src="'+ gDefaultPage +'" style="width:100%;height:100%;background-color:transparent;" scrolling="no" 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
	* @argument fadeBackground - whether to fade the background & make it inaccessible by the mouse
	*/
function showPopWin(url, width, height, returnFunc, showTitleBar, titleText, showCloseBox, fadeBackground) {
	//alert('showPopWin');
	//alert(gPopFrame.src);
	// show or hide the window close widget
	if(document.getElementById('popupFrame').contentWindow.adjustDim)
	{
		document.getElementById('popupFrame').contentWindow.adjustDim(width- 4, height);// - 4;
	}
	else if(top.frames['popupFrame'].adjustDim)
	{
		top.frames['popupFrame'].adjustDim(width - 4, height);
	}
	gPopFrame.style.width = (width - 4)+"px";
	gPopFrame.style.height = height+"px";
	//alert(gPopFrame.style.width);
	//gPopFrame.width = (width - 4) + "px";
	//gPopFrame.height = (height - 4) + "px";
	gPopFrame.src = url;
	//document.getElementById('gggg').innerHTML = gPopFrame.src;
	
	if (showCloseBox == null || showCloseBox == true) {
		document.getElementById("popCloseBox").style.display = "block";
	} else {
		document.getElementById("popCloseBox").style.display = "none";
	}
	
	showTitleBar = showTitleBar == null || showTitleBar == true ? true : false;
	if (showTitleBar)
	{
		//alert('show title bar');
		document.getElementById("popupTitleBar").style.visibility = "visible";
		document.getElementById("popupTitleBar").style.display = "block";
		if (titleText != null && titleText != "")
		{
			//alert('show title text');
			document.getElementById("popupTitle").style.display = "block";
			document.getElementById("popupTitle").innerHTML = titleText;
		}
	}
	else
	{
		//document.getElementById("popupTitle").style.display = "none";
		document.getElementById("popupTitleBar").style.visibility = "hidden";
		//alert('dont show title bar');
		document.getElementById("popupTitleBar").style.display = "none";
	}
	//alert(document.getElementById("popupTitleBar").style.display);
	
	gPopupIsShown = true;
	disableTabIndexes();
	if (fadeBackground == null || fadeBackground == true)
	{
		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);
	titleBarHeight = showTitleBar ? parseInt(document.getElementById("popupTitleBar").offsetHeight, 10) : 0;

	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 = (showTitleBar ? parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) : width) + "px";
	gPopFrame.style.height = (height) + "px";
	//alert(gPopFrame.style.width);
	
	// set the url
	//gPopFrame.src = url;
	
	gReturnFunc = returnFunc;
	// for IE
	if (gHideSelects == true) {
		hideSelectBoxes();
	}
	//addMouseInOutListener();
	window.setTimeout("setPopTitle();", 600);
}

//
var gi = 0;

//to adjust the position of the popup ins such a way that it is to the nearwst vicinity of the mouse pointer but also inside the visible portion of the browser
function adjustPopPosition(mouseX, mouseY, wOffset)//, hOffset)
{
	//alert('inside adjustPopPosition');
	if (wOffset == null || isNaN(wOffset))
	{
		wOffset = 10;
	}
	
	//in the newer version it is not needed since the thumbnail container is not inside an iframe so the cursor points passed are absolute & can be directly used
	var viewH = getViewportWidth();
	//alert("viewH="+viewH);
	var viewV = getViewportHeight();
	
	var scrollL = getScrollLeft();
	//alert("scrollL = "+scrollL);
	var scrollT = getScrollTop();
	
	var w = parseInt(gPopupContainer.style.width, 10);
	var h = parseInt(gPopupContainer.style.height, 10);
	
	var leftPt = 0;
	var topPt = 0;
	//alert("scroll = "+scrollBarWidth);
	//alert(wOffset);
	
	//alert("mouseX = "+mouseX);
	/*alert("viewH = "+viewH);
	alert("left scroll width = "+scrollL);
	alert("space on right = "+(viewH + scrollL - mouseX - wOffset - scrollBarWidth));
	alert("space on left = "+ (mouseX - scrollL - wOffset));*/
	//show on the left side if space in the left is greater than the width of the pop width & there is not enough space on the right
	//if (viewH + scrollL - mouseX - wOffset - scrollBarWidth < w && mouseX - scrollL - wOffset >= w)
	//alert(viewH + scrollL - mouseX - wOffset - scrollBarWidth);
	if (viewH - mouseX - wOffset - scrollBarWidth < w && mouseX - scrollL - wOffset >= w)
	{
		//alert(1);
		//leftPt = mouseX - wOffset - w;
		leftPt = scrollL + mouseX - wOffset - w;
	}
	//show on the left side
	else
	{
		//alert(2);
		//leftPt = mouseX + wOffset;
		leftPt = scrollL +  mouseX + wOffset;
	}
	//alert("leftPt = "+leftPt);

	//space on bottom not on top
	//if (mouseY - scrollT < Math.ceil(h/2) && viewV + scrollT - mouseY - scrollBarWidth >= Math.ceil(h/2))
	if (mouseY < Math.ceil(h/2) && viewV - mouseY - scrollBarWidth >= Math.ceil(h/2))
	{
		//alert(3);
		//topPt = scrollT;
		topPt = scrollT;
	}
	//space on top not on bottom
	//else if (viewV + scrollT - mouseY - scrollBarWidth < Math.ceil(h/2) && mouseY - scrollT >= Math.ceil(h/2))
	else if (viewV - mouseY - scrollBarWidth < Math.ceil(h/2) && mouseY >= Math.ceil(h/2))
	{
		//alert(4);
		topPt = scrollT + viewV - h - scrollBarWidth;
	}
	else
	{
		//alert(5);
		topPt = scrollT + mouseY - Math.ceil(h/2);
	}
	//alert(top);
	//alert("top = "+ topPt);
	//alert("left = "+ leftPt);
	gPopupContainer.style.top = topPt + "px";
	gPopupContainer.style.left = leftPt + "px";
}


function isVisible()
{
	//only considering the block vlaue of display as the criteria for being regarded as being displayed
	//return gPopupContainer.style.display == "block" ? true : false;
	return gPopupIsShown;
}


//code from http://www.alexandre-gomes.com/?p=115
function getScrollBarWidth()
{
	var inner = document.createElement('p');
	inner.style.width = "100%";
	inner.style.height = "200px";
	
	var outer = document.createElement('div');
	outer.style.position = "absolute";
	outer.style.top = "0px";
	outer.style.left = "0px";
	outer.style.visibility = "hidden";
	outer.style.width = "200px";
	outer.style.height = "150px";
	outer.style.overflow = "hidden";
	outer.appendChild (inner);
	
	theBody = document.getElementsByTagName('BODY')[0];
	
	theBody.appendChild (outer);
	var w1 = inner.offsetWidth;
	outer.style.overflow = 'scroll';
	var w2 = inner.offsetWidth;
	if (w1 == w2) w2 = outer.clientWidth;
	
	theBody.removeChild (outer);
	
	//return (w1 - w2);
	scrollBarWidth = w1 - w2;
}
//scrollBarWidth = getScrollBarWidth();


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;
	}
	gPopFrame.src = gDefaultPage;
	gPopupMask.style.display = "none";
	gPopupContainer.style.display = "none";
	//source should be changed as soon as possible, otherwise it is the previous source is being visible for a fractino of second if the next display is too quick
	
	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);
	}
	
	// display all select boxes
	if (gHideSelects == true) {
		displaySelectBoxes();
	}
	//document.getElementById('gggg').innerHTML = gPopFrame.src;
}

/**
 * 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() {
	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() {
  var x = document.getElementsByTagName("SELECT");

  for (i=0;x && i < x.length; i++) {
    x[i].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 wanting select form tags to always be the 
 * topmost z-index or layer.
 */
function displaySelectBoxes() {
  var x = document.getElementsByTagName("SELECT");

  for (i=0;x && i < x.length; i++){
    x[i].style.visibility = "visible";
  }
}