/**
 * POPUP WINDOW CODE v1.2
 * 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
 * 	Scott - hiding/showing selects for IE users
 *	Todd Huss - inserting modal dynamically and anchor classes
 *  Guofeng Chen - popup division as modal dialog
 *
 * 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, false);
        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");
    }
}

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
// ----------------global variables for popup iframe
var gPopupMask = null;
var gPopupContainer = null;
var gPopFrame = null;
var gReturnFunc;

// ----------------global variables for popup division
var gPopupMaskD = null;
var gPopupContainerD = null;
var gPopFrameD = null;
//var gPopupTitleBarD = null;

// -------------------
var gPopupIsShown = false;
var gPopupIsShownD = false;
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;
} 

/**
 * Initializes popup code on load.	
 */
function initPopUp() {
	// Add the HTML to the body
	body = document.getElementsByTagName('body')[0];
	popmask = document.createElement('div');
	popmask.id = '_$popupMask$_';
	popmask.className= 'popupMask2';
	popcont = document.createElement('div');
	popcont.id = '_$popupContainer$_';
	popcont.className='popupContainer2';
	popcont.innerHTML = '' +
		'<div id="_$popupInner$_" class="popupInner">' +			
			'<iframe src="blank.htm" style="width:100%;height:100%;background-color:transparent;" scrolling="auto" frameborder="0" allowtransparency="true" id="popupFrame" name="popupFrame" width="100%" height="100%"></iframe>' +
		'</div>';		
	body.appendChild(popmask);
	body.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.
	*/
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 + "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.width = width + "px";
	gPopFrame.style.height = height + "px";
	
	// set the url
	gPopFrame.src = url;
	
	gReturnFunc = returnFunc;
	// for IE
	if (gHideSelects == true) {
		hideSelectBoxes();
	}	
//	window.setTimeout("setPopTitle();", 600);
}

/**
	* @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 showPopWinD(popupMask,popupContainer, titleBar, popupFrame,width, height, returnFunc) {
	showPopWinDWithSelect(popupMask,popupContainer, titleBar, popupFrame,width, height, returnFunc);
	
	// for IE
	if (gHideSelects == true) {
		hideSelectBoxes();
	}
}

function showPopWinDWithSelect(popupMask,popupContainer, titleBar, popupFrame,width, height, returnFunc) {
	gPopupIsShownD = true;
	disableTabIndexes();
	
	gPopupMaskD = popupMask;
	gPopupContainerD = popupContainer;
	gPopFrameD = popupFrame;
//	gPopupTitleBarD = titleBar;
		
	gPopupMaskD.style.display = "block";
	gPopupContainerD.style.display = "block";
	// calculate where to place the window on screen
	centerPopWinD(width, height);
	
//	var titleBarHeight = parseInt(titleBar.offsetHeight, 10);	
	gPopupContainerD.style.width = width + "px";
	gPopupContainerD.style.height = height + "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
	gPopFrameD.style.width = "100%";
	gPopFrameD.style.height = height + "px";
	
	gReturnFunc = returnFunc;	
}

//
//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";		
		
//		var titleBarHeight = parseInt(document.getElementById("_$popupTitleBar$_").offsetHeight, 10);		
		gPopupContainer.style.top = (scTop + ((fullHeight - height) / 2)) + "px";
		gPopupContainer.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
	}
}
addEvent(window, "resize", centerPopWin);
addEvent(window, "scroll", centerPopWin);

/////////////////////////////////////////////////////////////
function centerPopWinD(width, height) {
	if (gPopupIsShownD == true ) {	    
		if (width == null || isNaN(width)) {
			width = gPopupContainerD.offsetWidth;
		}
		if (height == null) {
			height = gPopupContainerD.offsetHeight;
		}
		
		var fullHeight = getViewportHeight();
		var fullWidth = getViewportWidth();
		
		var theBody = document.documentElement;
		
		var scTop = parseInt(theBody.scrollTop,10);
		var scLeft = parseInt(theBody.scrollLeft,10);
		
		gPopupMaskD.style.height = fullHeight + "px";
		gPopupMaskD.style.width = fullWidth + "px";
		gPopupMaskD.style.top = scTop + "px";
		gPopupMaskD.style.left = scLeft + "px";
		
//		var titleBarHeight = parseInt(gPopupTitleBarD.offsetHeight, 10);
		
		gPopupContainerD.style.top = (scTop + ((fullHeight - height) / 2)) + "px";
		gPopupContainerD.style.left =  (scLeft + ((fullWidth - width) / 2)) + "px";
	}
}
addEvent(window, "resize", centerPopWinD);
addEvent(window, "scroll", centerPopWinD);
//window.onscroll = centerPopWinD;
//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 = 'blank.htm';		
	if (gHideSelects == true) {
		displaySelectBoxes();
	}
}

function hidePopWinOnly(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 = 'blank.htm';	
}

/**
 * @argument callReturnFunc - bool - determines if we call the return function specified
 * @argument returnVal - anything - return value 
 */
function hidePopWinD(callReturnFunc) {
	gPopupIsShownD = false;
	restoreTabIndexes();
	if (gPopupMaskD == null) {
		return;
	}
	gPopupMaskD.style.display = "none";
	gPopupContainerD.style.display = "none";
	if (callReturnFunc == true && gReturnFunc != null) {
		gReturnFunc();
	}	
	if (gHideSelects == true) {
		displaySelectBoxes();
	}
	gPopupMaskD = null;
    gPopupContainerD = null;
    gPopFrameD = null;
//    gPopupTitleBarD = null;
}

/**
 * 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() {
    var elements = document.getElementsByTagName("SELECT");
    for(var i = 0, count = elements.length; i < count ; i++) {
        elements[i].style.visibility="hidden";
    }    
//	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";
//			}
//		}
//	}
}

function hideSelectBox(id) {
    if (id != null) {
        var sb = document.getElementById(id);
        if (sb != null && sb.style) {
            sb.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() {
    var elements = document.getElementsByTagName("SELECT");
    for(var i = 0 , count = elements.length; i < count ; i++) {
        elements[i].style.visibility="visible";
    }
//	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 displaySelectBox(id) {
    if (id != null) {
        var sb = document.getElementById(id);
        if (sb != null && sb.style) {
            sb.style.visibility = "visible";
        }
    }
}