/**
* 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 gPopupReportIsShown = false;
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).html('<div id="popborder">' +
		'<div id="popupInner">' +
			'<div id="popupTitleBar">' +
			    '<table><tr><td id="ModalTitle"></td><td id="popupControls"><img src="/images/close.gif" onmouseover="this.src=\'/images/close_active.gif\'" onmouseout="this.src=\'/images/close.gif\'" onclick="CloseModal();" id="popCloseBox" /></td></tr></table>' +
			'</div>' +
			'<div><table><tr><td style="background-color:transparent;" allowtransparency="true" id="popupFrame" name="popupFrame">Loading...</td></tr></table>' +
		'</div></div></div>');
    theBody.appendChild(popmask);
    theBody.appendChild(popcont);

    gPopupMask = $("#popupMask");
    gPopupContainer = $("#popupContainer");
    gPopFrame = $("#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;
    }
}

/**
* @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 ShowModal(html, titletext, width, height, returnFunc)
{
    gReturnFunc = returnFunc;
    $(gPopFrame).html(html);
    $('#ModalTitle').html(titletext);
    gPopupIsShown = true;
    disableTabIndexes();
    $(gPopupMask).css({ display: 'block' });
    $(gPopupContainer).css({ display: 'block' });
    // calculate where to place the window on screen
    centerPopWin(width, height);

    var titleBarHeight = parseInt($("#popupTitleBar")[0].offsetHeight, 10);

    gPopupContainer.css({ width: width + 'px' });
    if (height != '')
        gPopupContainer.css({ 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.css({ width: parseInt($("#popupTitleBar")[0].offsetWidth, 10) + 'px' });
    if (height != '')
        gPopFrame.css({ height: height + 'px' });
    gReturnFunc = returnFunc;
    // for IE
    if (gHideSelects == true)
    {
        hideSelectBoxes();
    }

    SetModalSize();
}

function ShowReportModal(html, titletext)
{
    gReturnFunc = null;
    $(gPopFrame).html(html);
    $('#ModalTitle').html(titletext);
    $('#popupTitleBar').css({ background: "white" });
    gPopupIsShown = true;
    gPopupReportIsShown = true;
    disableTabIndexes();
    $(gPopupMask).css({ display: 'block' });
    $(gPopupContainer).css({ display: 'block' });
    // calculate where to place the window on screen

    gPopupContainer.css({ width: fullWidth + "px" });
    gPopupContainer.css({ height: (fullHeight - 35) + "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.css({ width: fullWidth + "px" });
    gPopFrame.css({ height: (fullHeight - 35) + "px" });
    // for IE
    if (gHideSelects == true)
    {
        hideSelectBoxes();
    }

    SetModalSize();
}

//
var gi = 0;
function centerPopWin(width, height)
{
    if (gPopupIsShown == true)
    {
        if (width == null || isNaN(width))
        {
            width = gPopupContainer[0].offsetWidth;
        }
        if (height == null)
        {
            height = gPopupContainer[0].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($("#popupTitleBar")[0].offsetHeight, 10);

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

        gPopupContainer.css({ top: (scTop - 4 + ((fullHeight - (height + titleBarHeight)) / 2)) + 'px' });
        gPopupContainer.css({ left: (scLeft + ((fullWidth - width) / 2)) + 'px' });
        //alert(fullWidth + " " + width + " " + gPopupContainer.style.left);
    }
}
/**
* 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).css({ height: popHeight + 'px', width: popWidth + 'px', overflow: 'hidden' });
}

/**
* @argument callReturnFunc - bool - determines if we call the return function specified
* @argument returnVal - anything - return value 
*/
function CloseModal()
{
    $('#popupTitleBar').css({ background: "#E0ECFF" });
    gPopupIsShown = false;
    gPopupReportIsShown = false;
    var theBody = document.getElementsByTagName("BODY")[0];
    document.documentElement.style.overflow = "auto";
    restoreTabIndexes();
    if (gPopupMask == null)
    {
        return;
    }
    $(gPopupMask).css({ display: "none" });
    $(gPopupContainer).css({ display: "none" });
    if (gReturnFunc != null)
    {
        // Set the return code to run in a timeout.
        // Was having issues using with an Ajax.Request();
        window.setTimeout(gReturnFunc, 1);
    }
    $(gPopFrame).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()
{
    return;
    if (window.frames["popupFrame"].document.title == null)
    {
        window.setTimeout("setPopTitle();", 10);
    } else
    {
        $('#popupTitle#').html(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";
            }
        }
    }
}

/**
* 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 = 0;
    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;
    }
}