// Popup code
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;
var gPopupIsShown = false;
var fd_offsetx,fd_tempx;
var fd_offsety,fd_tempy;
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;
}

var fd_dragapproved=false
var ie5=document.all&&document.getElementById
var ns6=document.getElementById&&!document.all


function initPopUp() {
	if (document.getElementById("popupContainer")==null)
		createPopupContainer();
	
	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;
	}
	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, returnFunc) {
	initPopUp()
	if (document.getElementById("popupMask")==null)
		{
		
		gPopupMask=document.createElement('div');
		gPopupMask.id='popupMask';
		//gPopupMask.innerHTML='';
		document.body.appendChild(gPopupMask);
		}
	else
		gPopupMask=document.getElementById("popupMask");
	
	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";
	
	// 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) {
	var init=1;
	if (gPopupIsShown == true) {
		if (width == null || isNaN(width)) {
			width = gPopupContainer.offsetWidth;
			init=0;
		}
		if (height == null) {
			height = gPopupContainer.offsetHeight;
		}
		
		var fullHeight = getViewportHeight();
		var fullWidth = getViewportWidth();
		
		var theBody = document.documentElement;
		
		var scTop = getScrollTop();
		var scLeft =getScrollLeft();

		gPopupMask.style.height = fullHeight + "px";
		gPopupMask.style.width = fullWidth + "px";
		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);
		if (init==1)
		{
		    gPopupContainer.style.top = (scTop + ((fullHeight - (height+titleBarHeight)) / 2)) + "px";
			gPopupContainer.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
		}
		
	}
}
addEvent(window, "resize", centerPopWin);
//addEvent(window, "scroll", centerPopWin);
window.onscroll = centerPopWin;

if( window.addEventListener != null )
	window.addEventListener("DOMMouseScroll", centerPopWin, false);

/**
 * @argument callReturnFunc - bool - determines if we call the return function specified
 * @argument returnVal - anything - return value 
 */
function hidePopWin(callReturnFunc) {

    removeEvent(document.getElementById("popupContainer"),"mousemove", drag_drop, false)
    removeEvent(document,"mousemove", drag_drop,false)
    removeEvent(document,"mouseup", stopdrag,false)

	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 (!e) e = event;
    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";
			}
		}
	}
}

function getViewportHeight() {
    
	if (window.innerHeight!=window.undefined) return window.innerHeight;
	if (document.compatMode=='CSS1Compat') return document.documentElement.clientHeight;
	if (document.body && document.body.clientHeight) 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 && document.body.clientWidth) return document.body.clientWidth; 
	return window.undefined; 
}


function getScrollLeft()
{
    if (document.all)
    {
         if (document.documentElement && document.documentElement.scrollLeft)
            return  document.documentElement.scrollLeft;
         else if (document.body)
	        return  document.body.scrollLeft;
    
        return 0
    }
    else
        return window.pageXOffset;
        
    return 0

}

function getScrollTop()
{
    if (document.all)
    {
        if (document.documentElement && document.documentElement.scrollTop)
	        return  document.documentElement.scrollTop;
         else if (document.body)
	        return  document.body.scrollTop;
    
        return 0
    }
    else
        return window.pageYOffset;
        
    return 0
}

/*
    float div
*/


function drag_drop(e)
{
    if (ie5 && fd_dragapproved&&event.button==1 && document.getElementById("popupContainer") && document.getElementById("popupFrame")){
        document.getElementById("popupContainer").style.left=fd_tempx+event.clientX-fd_offsetx+"px"
        document.getElementById("popupContainer").style.top=fd_tempy+event.clientY-fd_offsety+"px"
    }
    else if (ns6 && fd_dragapproved && document.getElementById("popupContainer") && document.getElementById("popupFrame")){
        document.getElementById("popupContainer").style.left=fd_tempx+e.clientX-fd_offsetx+"px"
        document.getElementById("popupContainer").style.top=fd_tempy+e.clientY-fd_offsety+"px"
    }
}

function initializedrag(e){
    if (document.getElementById("popupContainer") && document.getElementById("popupFrame"))
    {
        fd_offsetx=ie5? event.clientX : e.clientX;
        fd_offsety=ie5? event.clientY : e.clientY;
        //document.getElementById("popupFrame").style.display="none"; 
        fd_tempx=parseInt(document.getElementById("popupContainer").style.left,10);
        fd_tempy=parseInt(document.getElementById("popupContainer").style.top,10);
        
        fd_dragapproved=true;
        addEvent(document.getElementById("popupContainer"),"mousemove", drag_drop)
        addEvent(document,"mousemove", drag_drop)
        addEvent(document,"mouseup", stopdrag)
    }
}

function stopdrag(){
    if (document.getElementById("popupContainer") && document.getElementById("popupFrame"))
    {
        fd_dragapproved=false;
        //document.getElementById("popupContainer").onmousemove=null;
        removeEvent(document.getElementById("popupContainer"),"mousemove", drag_drop, false)
        removeEvent(document,"mousemove", drag_drop,false)
        removeEvent(document,"mouseup", stopdrag,false)
    }
}

/*
--------------------------------
*/

function createPopupContainer()
{
    if (document.getElementById("popupContainer"))
        return true;
	var body = document.getElementsByTagName('body').item(0);
	var div = document.createElement('div');
	div.id = 'popupContainer';
	div.innerHTML='<div id="popupInner"><div id="popupTitleBar" onMousedown="initializedrag(event)" onMouseup="stopdrag()" onSelectStart="return false"><div id="popupTitle" onSelectStart="return false"></div><div id="popupControls"><IMG onclick="hidePopWin(true);" src="img/close.gif"></div></div><iframe id="popupFrame" style="WIDTH: 100%; HEIGHT: 100%; BACKGROUND-COLOR: transparent" name="popupFrame" src="loading.html" frameBorder="0" width="100%" scrolling="auto" height="100%" allowTransparency></iframe></div>'

	body.appendChild(div);
		
	return true;

}