/**
 * 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 usePopFrame = 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");
    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.
    */
function showPopWin(url, width, height, title, returnFunc) {
    gPopupIsShown = true;
    disableTabIndexes();
    gPopupMask.style.display = "block";
    gPopupContainer.style.display = "block";
    // calculate where to place the window on screen
    centerPopWin(width, height, url);
    
    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
    if (usePopFrame) gPopFrame.style.width = parseInt(document.getElementById("popupTitleBar").offsetWidth, 10) + "px";
    if (usePopFrame) gPopFrame.style.height = (height) + "px";
    
    // set the url
    if (usePopFrame) gPopFrame.src = url;
    
    createIFrame(url, width, height);
    
    gReturnFunc = returnFunc;
    // for IE
    if (gHideSelects == true) {
        hideSelectBoxes();
    }
    //window.setTimeout("setPopTitle();", 600);
    document.getElementById("popupTitle").innerHTML = title;
    
    if (url.indexOf("Controller.aspx") > -1)
    {
        //setTimeout('loadInitial()', 750)
    }
}

function getScrollHeight()
{
   var h = window.pageYOffset ||
           document.body.scrollTop ||
           document.documentElement.scrollTop;
           
   return h ? h : 0;
}

//
var gi = 0;
function centerPopWin(width, height, url) {
    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);
        
        scTop = scTop + getScrollHeight();
        scLeft = scLeft + 50;
        
        if (url.indexOf("Controller.aspx") > -1)
        {
            if (fullHeight < 500) 
            {
                if (scTop < 150) scTop = 150;
            }
            else if (fullHeight < 550) 
            {
                if (scTop < 120) scTop = 120;
            }
            else if (fullHeight < 650) 
            {
                if (scTop < 100) scTop = 100;
            }
            else if (fullHeight < 750) 
            {
                if (scTop < 80) scTop = 80;
            }
            
            scLeft = -25;
        }
        
        gPopupMask.style.height = fullHeight + "px";
        gPopupMask.style.width = fullWidth + "px";
        gPopupMask.style.top = scTop + "px";
        gPopupMask.style.left = scLeft + "px";
        
        //alert(scTop + " " + scLeft);
        
        window.status = gPopupMask.style.top + " " + gPopupMask.style.left + " " + gi++;
        
        var titleBarHeight = parseInt(document.getElementById("popupTitleBar").offsetHeight, 10);
        
        if (url.indexOf("Controller.aspx") > -1)
        {
            //gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
            //gPopupContainer.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
            gPopupContainer.style.top = "50px";
            gPopupContainer.style.left = "50px";
        }
        else
        {
            gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
            gPopupContainer.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
        }
        //alert(fullWidth + " " + width + " " + gPopupContainer.style.left);
    }
}

/**
 * @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);
    }
    if (usePopFrame) gPopFrame.src = '/Scripts/modal/loading.html';
    IFrameDoc.location.replace('/Scripts/modal/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";
            }
        }
    }
}

var IFrameObj; // our IFrame object
var IFrameDoc;
function createIFrame(URL, width, height) {
  if (!document.createElement) {return true};
  //var IFrameDoc;
  IFrameObj = false;
  document.getElementById('popupContentArea').innerHTML = "";
  if (!IFrameObj && document.createElement) {
    // create the IFrame and assign a reference to the
    // object to our global variable IFrameObj.
    // this will only happen the first time 
    // createIFrame() is called
   try {
      var tempIFrame=document.createElement('iframe');
      tempIFrame.setAttribute('id','RSIFrame');
      tempIFrame.setAttribute('name','RSIFrame');
      tempIFrame.setAttribute('frameborder','0');
      tempIFrame.setAttribute('allowTransparency','true');
      tempIFrame.style.border='0px';
      tempIFrame.style.width=width + 'px';
      tempIFrame.style.height=height + 'px';
      //IFrameObj = document.body.appendChild(tempIFrame);
      IFrameObj = document.getElementById('popupContentArea').appendChild(tempIFrame);
      
      if (document.frames) {
        // this is for IE5 Mac, because it will only
        // allow access to the document object
        // of the IFrame if we access it through
        // the document.frames array
        IFrameObj = document.frames['RSIFrame'];
      }
    } catch(exception) {
      // This is for IE5 PC, which does not allow dynamic creation
      // and manipulation of an iframe object. Instead, we'll fake
      // it up by creating our own objects.
      iframeHTML='\<iframe id="RSIFrame" name="RSIFrame" frameborder="0" allowtransparency="true" style="';
      iframeHTML+='border:0px; ';
      iframeHTML+='width:" + width + "px;';
      iframeHTML+='height:" + height + "px;';
      iframeHTML+='"><\/iframe>';
      //document.body.innerHTML+=iframeHTML;
      document.getElementById('popupContentArea').innerHTML = iframeHTML;
      IFrameObj = new Object();
      IFrameObj.document = new Object();
      IFrameObj.document.location = new Object();
      IFrameObj.document.location.iframe = document.getElementById('RSIFrame');
      IFrameObj.document.location.replace = function(location) {
        this.iframe.src = location;
      }
    }
  }
  
  if (navigator.userAgent.indexOf('Gecko') !=-1 && !IFrameObj.contentDocument) {
    // we have to give NS6 a fraction of a second
    // to recognize the new IFrame
    setTimeout("createIFrame('" + URL + "')",10);
    return false;
  }
  
  if (IFrameObj.contentDocument) {
    // For NS6
    IFrameDoc = IFrameObj.contentDocument; 
  } else if (IFrameObj.contentWindow) {
    // For IE5.5 and IE6
    IFrameDoc = IFrameObj.contentWindow.document;
  } else if (IFrameObj.document) {
    // For IE5
    IFrameDoc = IFrameObj.document;
  } else {
    return true;
  }
  
  IFrameDoc.location.replace(URL);
  return false;
}