/**
* POPUP WINDOW CODE
* 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.
*/

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 code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var gPopupTitle = null;

var gHideSelects = false;
var gHideObjects = true;
var gLoadingUrl = 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() {
    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;
    }
}
addEvent(window, "load", initPopUp);

function renderPopWin(closeIconUrl, loadingUrl) {
    gLoadingUrl = loadingUrl;
    document.write("<div id=\"popupMask\" style=\"display: none;\">&nbsp;</div>");
    document.write("<div id=\"popupContainer\" style=\"display: none;\">");

    document.write("<div id=\"popupInner\">");

    document.write("<div id=\"popupTitleBar\">");
    document.write("<div id=\"popupTitle\"></div>");
    document.write("<div id=\"popupControls\" style=\"padding-right:70px;\">");
    document.write("<img src=\"" + closeIconUrl + "\" onclick=\"hidePopWin(false);\" />");
    document.write("</div>");
    document.write("</div>");

    document.write("<iframe src=\"" + loadingUrl + "\" style=\"width:100%;height:100%;background-color:transparent;\" scrolling=\"auto\" frameborder=\"0\" allowtransparency=\"true\" id=\"popupFrame\" name=\"popupFrame\" width=\"100%\" height=\"100%\"></iframe>");

    document.write("</div>");

    document.write("</div>");
}

/**
* @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 showPopWin(url, width, height, returnFunc) {
    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";
    // 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";
    gPopupTitle = window.frames["popupFrame"].document.title;

    // set the url
    gPopFrame.src = url;

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

    window.setTimeout("setPopTitle();", 249);
}

//
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();

        var theBody = document.documentElement;

        var scTop = parseInt(theBody.scrollTop, 10);
        var scLeft = parseInt(theBody.scrollLeft, 10);

        gPopupMask.style.height = fullHeight + "px";
        gPopupMask.style.width = fullWidth + "px";
                gPopupMask.style.top = scTop + "px";
                gPopupMask.style.left = scLeft + "px";

//        scTop = (document.documentElement.scrollTop + (document.documentElement.clientHeight - gPopupMask.offsetHeight) / 2);
                //        scLeft = (document.documentElement.scrollLeft + (document.documentElement.clientWidth - gPopupMask.offsetWidth) / 2);
                gPopupMask.style.height = Math.max(theBody.clientHeight, document.body.scrollHeight) + "px";
//        scLeft = 0;
//        //scTop = 0;
//        gPopupMask.style.top = scTop + "px" ;
//        gPopupMask.style.left = scLeft + "px";



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

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

        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;

/**
* @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 = gLoadingUrl;

    // display all select boxes
    if (gHideSelects || gHideObjects) {
        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.frames["popupFrame"].document.title == gPopupTitle) {
        window.setTimeout("setPopTitle();", 99);
    }
    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 ((gHideSelects && document.forms[i].elements[e].tagName == "SELECT")
				|| (gHideObjects && document.forms[i].elements[e].tagName == "OBJECT")) {
                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 ((gHideSelects && document.forms[i].elements[e].tagName == "SELECT")
				|| (gHideObjects && document.forms[i].elements[e].tagName == "OBJECT")) {
                document.forms[i].elements[e].style.visibility = "visible";
            }
        }
    }
}