/**
 * 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
 */

// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var gDefaultPage = "";
var gHideSelects = true;
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.innerHTML = '' +
        '<div id="popupInner">' +
            '<div id="popupTitleBar">' +
                '<div id="popupControls">' +
                                    '<a onclick="hidePopWin();" id="popCloseBox" class="close_window cursor"><span>close</span>&nbsp;'+
                                        '<img src="./img/close_ico.gif" class="vertical_middle">'+
                                    '</a>'+
                '</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>';
    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;
    }*/

}
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) {
    // show or hide the window close widget
    gPopupIsShown = true;
    disableTabIndexes();
    gPopupMask.style.display = "block";
    gPopupContainer.style.display = "block";

    centerPopWin(width, height);

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

    gPopupContainer.style.width = width + "px";
        gPopupContainer.style.height = (height) + "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

        var titleBarWidth = parseInt(document.getElementById("popupFrame").offsetWidth, 10);
        titleBarWidth+5;
    gPopFrame.style.width = parseInt(document.getElementById("popupFrame").offsetWidth, 10) + "px";
    //gPopFrame.style.height = (height) + "px";

    // set the url
    gPopFrame.src = url;

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

    window.setTimeout("setPopTitle();", 600);
}

//
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.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 titleBarHeight = parseInt(document.getElementById("popupFrame").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";*/
                 gPopupContainer.style.top = "15%";
        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;
    }
    gPopupMask.style.display = "none";
    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 = window.frames["popupFrame"].returnVal;
        window.setTimeout('gReturnFunc(gReturnVal);', 1);
    }
    gPopFrame.src = gDefaultPage;
    // 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 {
        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";
  }
}