/**
 * COMMON DHTML FUNCTIONS
 * These are handy functions I use all the time.
 *
 * By Seth Banks (webmaster at subimage dot com)
 * http://www.subimage.com/
 *
 * Up to date code can be found at http://www.subimage.com/dhtml/
 *
 * This code is free for you to use anywhere, just keep this comment block.
 */

function findPosX(obj)
{
	var curleft = 0;
	if(obj.offsetParent)
		while(1) 
		{
		  curleft += obj.offsetLeft;
		  if(!obj.offsetParent)
			break;
		  obj = obj.offsetParent;
		}
	else if(obj.x)
		curleft += obj.x;
	return curleft;
}

function findPosY(obj)
{
	var curtop = 0;
	if(obj.offsetParent)
		while(1)
		{
		  curtop += obj.offsetTop;
		  if(!obj.offsetParent)
			break;
		  obj = obj.offsetParent;
		}
	else if(obj.y)
		curtop += obj.y;
	return curtop;
}

/**
 * X-browser event handler attachment and detachment
 *
 * @argument obj - the object to attach event to
 * @argument evType - name of the event - DONT ADD "on", pass only "mouseover", etc
 * @argument fn - function to call
 */
function addEvent(obj, evType, fn){
 if (obj.addEventListener){
    obj.addEventListener(evType, fn, true);
    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() {
    if (window.innerWidth!=window.undefined) return window.innerWidth; 
    if (document.compatMode=='CSS1Compat') return document.documentElement.clientWidth; 
    if (document.body) return document.body.clientWidth; 
    return window.undefined; 
}
/**
 * POPUP WINDOW CODE v1.1
 * Used for displaying DHTML only popups instead of using buggy modal windows.
 *
 * By Seth Banks (webmaster at subimage dot com)
 * http://www.subimage.com/
 *
 * Contributions by Eric Angel (tab index code) and Scott (hiding/showing selects for IE users)
 *
 * 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 gHideSelects = false;


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() {
    gPopupMask = document.getElementById("popupMask");
    gPopupContainer = document.getElementById("popupContainer");
    //gPopupContainer.className = 'visible';
    
    // 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;
    }
    try
    {

        var showPassEls = document.getElementsByName('ShowPasswordWindow');
        
        var showPass = null;
        if (showPassEls != null)
        {
            showPass = showPassEls[0];
        }
        if (showPass)
        {
			var dest = document.getElementById('PCDestination');
			var destValue = '';
			if (dest != null)
			{
			   destValue = dest.value;
			}
            if (showPass.value == "true")
            {
              showPasswordWin(400, 200, null,destValue);
              window.onload = centerPopWin;
            }
            else
            {
                showPasswordWin(400, 200, null,destValue);
                hidePopWin(false);
            }
        }
        else
        {
			hidePopWin(false);
        }
        //alert('showPass' + showPass);
    }
    catch (exc)
    {
       // alert('1' + exc.description);
    }
    
}
//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.
    */

function showPasswordWin(width, height, returnFunc, destination) {
	if (document.getElementById("PCDestination") != null)
	{
		document.getElementById("PCDestination").value = destination;
	}
    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";

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

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 fullHeight = getViewportHeight();
		var fullWidth = getViewportWidth();
		
		//determine the offset of the "SelfCare Content Div"
		var scDiv = document.getElementById("frmMain");
		var scDivXCoord = findPosX(scDiv);
		var scDivYCoord = findPosY(scDiv);

    //get the amount of scrolling for the document so we can move the pw window on scrolling    
    var scrollTop = 0;
    var scrollLeft = 0;
		if (document.body) //document.body should be set if the page has already loaded
		{
		  scrollTop = document.body.scrollTop;
		  scrollLeft = document.body.scrollLeft;
		}


    //find and set the initial x,y coords of the popup mask (the grey area)
    var topCoord = scDivYCoord - scrollTop > 0 ? scDivYCoord : scrollTop;
    var leftCoord = scDivXCoord - scrollLeft > 0 ? scDivXCoord : scrollLeft;
		gPopupMask.style.top = topCoord + "px";
		gPopupMask.style.left = leftCoord + "px";

    var popupMaskHeight = (scrollTop - scDivYCoord) > 0 ? fullHeight : fullHeight + scrollTop - scDivYCoord;
    var popupMaskWidth  = (scrollLeft - scDivXCoord) > 0 ? fullWidth : fullWidth + scrollLeft - scDivXCoord;
  	gPopupMask.style.height = popupMaskHeight + "px";
		gPopupMask.style.width = popupMaskWidth + "px";
		
		var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
		
		gPopupContainer.style.top = (topCoord + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
		gPopupContainer.style.left =  (leftCoord + ((fullWidth - width) / 2)) + "px";

//        alert ("gPopupContainer.style.top - " + gPopupContainer.style.top + "\ngPopupContainer.style.left - " + gPopupContainer.style.left
//		+ "\nheight - " + height + " ** width- " + width 
//        + "\nscHeight - " + scHeight + " ** scWidth- " + scWidth 
//        + "\nscTop - " + scTop + " ** scLeft- " + scLeft 
//        + "\nntitleBarHeight - " + titleBarHeight + " ** titleBarWidth - " + titleBarWidth);

		
	}
}
addEvent(window, "resize", centerPopWin);
//addEvent(window, "scroll", centerPopWin);
window.onscroll = centerPopWin;
        

/**
 * @argument callReturnFunc - bool - determines if we call the return function specified
 * @argument returnVal - anything - return value 
 */
function hidePopWin(callReturnFunc) {
    gPopupIsShown = false;
    restoreTabIndexes();
    if (gPopupMask == null) {
        return;
    }
    gPopupMask.style.display = "none";
    gPopupContainer.style.display = "none";
    if (callReturnFunc == true && gReturnFunc != null) {
//        gReturnFunc(window.frames["popupFrame"].returnVal);
    }
    //gPopFrame.src = 'loading.html';
    // 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() {
    //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";
            }
        }
    }
}