//*****************************************************************************
// Do not remove this notice.
//
// Copyright 2001 by Mike Hall.
// See http://www.brainjar.com for terms of use.
//*****************************************************************************
// Determine browser and version.
function Browser() {
	var ua, s, i;

	this.isIE    = false;  // Internet Explorer
	this.isNS    = false;  // Netscape
	this.version = null;

	ua = navigator.userAgent;

	s = "MSIE";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isIE = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}

	s = "Netscape6/";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = parseFloat(ua.substr(i + s.length));
		return;
	}

// Treat any other "Gecko" browser as NS 6.1.

	s = "Gecko";
	if ((i = ua.indexOf(s)) >= 0) {
		this.isNS = true;
		this.version = 6.1;
		return;
	}
}

var browser = new Browser();

//=============================================================================
// Window Object
//=============================================================================

function Window(el) {

	var i, mapList, mapName;

	// Get window components.

	this.frame           = el;
	this.titleBar        = winFindByClassName(el, "titleBar");
	this.titleBarText    = winFindByClassName(el, "titleBarText");
	this.titleBarButtons = winFindByClassName(el, "titleBarButtons");
	this.clientArea      = winFindByClassName(el, "clientArea");

	// Find matching button image map.

	mapName = this.titleBarButtons.useMap.substr(1);
	mapList = document.getElementsByTagName("map");
	for (i = 0; i < mapList.length; i++)
//		if (mapList[i].name == mapName)
//			this.titleBarMap = mapList[i];
		if (mapName.indexOf(mapList[i].name) != -1)
			this.titleBarMap = mapList[i];
	// Save colors.

	this.activeFrameBackgroundColor  = this.frame.style.backgroundColor;
	this.activeFrameBorderColor      = this.frame.style.borderColor;
	this.activeTitleBarColor         = this.titleBar.style.backgroundColor;
	this.activeTitleTextColor        = this.titleBar.style.color;
	this.activeClientAreaBorderColor = this.clientArea.style.borderColor;
	if (browser.isIE)
		this.activeClientAreaScrollbarColor = this.clientArea.style.scrollbarBaseColor;

	// Save images.

	this.activeButtonsImage   = this.titleBarButtons.src;
	this.inactiveButtonsImage = this.titleBarButtons.longDesc;

	// Set flags.

	this.isOpen      = false;
	this.isMinimized = false;

	// Set methods.

	this.open       = winOpen;
	this.close      = winClose;
	this.minimize   = winMinimize;
	this.restore    = winRestore;
	this.makeActive = winMakeActive;

	// Set up event handling.

	this.frame.parentWindow = this;
	this.frame.onmousemove  = winResizeCursorSet;
	this.frame.onmouseout   = winResizeCursorRestore;
	this.frame.onmousedown  = winResizeDragStart;

	this.titleBar.parentWindow = this;
	//comment out next line to disable moving the popup.
	//this.titleBar.onmousedown  = winMoveDragStart;

	this.clientArea.parentWindow = this;
	this.clientArea.onclick      = winClientAreaClick;
//if (typeof this.titleBarMap != "undefined") {
	for (i = 0; i < this.titleBarMap.childNodes.length; i++)
		if (this.titleBarMap.childNodes[i].tagName == "AREA")
			this.titleBarMap.childNodes[i].parentWindow = this;
//}
	// Calculate the minimum width and height values for resizing
	// and fix any initial display problems.

	var initLt, initWd, w, dw;

	// Save the inital frame width and position, then reposition
	// the window.

	initLt = this.frame.style.left;
	initWd = parseInt(this.frame.style.width);
	this.frame.style.left = -this.titleBarText.offsetWidth + "px";

	// For IE, start calculating the value to use when setting
	// the client area width based on the frame width.

	if (browser.isIE) {
		this.titleBarText.style.display = "none";
		w = this.clientArea.offsetWidth;
		this.widthDiff = this.frame.offsetWidth - w;
		this.clientArea.style.width = w + "px";
		dw = this.clientArea.offsetWidth - w;
		w -= dw;     
		this.widthDiff += dw;
		this.titleBarText.style.display = "";
	}

	// Find the difference between the frame's style and offset
	// widths. For IE, adjust the client area/frame width
	// difference accordingly.

	w = this.frame.offsetWidth;
	this.frame.style.width = w + "px";
	dw = this.frame.offsetWidth - w;
	w -= dw;     
	this.frame.style.width = w + "px";
	if (browser.isIE)
		this.widthDiff -= dw;

	// Find the minimum width for resize.

	this.isOpen = true;  // Flag as open so minimize call will work.
	this.minimize();
	// Get the minimum width.
	if (browser.isNS && browser.version >= 1.2)
		// For later versions of Gecko.
		this.minimumWidth = this.frame.offsetWidth;
	else
		// For all others.
		this.minimumWidth = this.frame.offsetWidth - dw;

	// Find the frame width at which or below the title bar text will
	// need to be clipped.

	this.titleBarText.style.width = "";
	this.clipTextMinimumWidth = this.frame.offsetWidth - dw;

	// Set the minimum height.

	this.minimumHeight = 1;

	// Restore window. For IE, set client area width.

	this.restore();
	this.isOpen = false;  // Reset flag.
	initWd = Math.max(initWd, this.minimumWidth);
	this.frame.style.width = initWd + "px";
	if (browser.isIE)
		this.clientArea.style.width = (initWd - this.widthDiff) + "px";

	// Clip the title bar text if needed.

	if (this.clipTextMinimumWidth >= this.minimumWidth)
		this.titleBarText.style.width = (winCtrl.minimizedTextWidth + initWd - this.minimumWidth) + "px";

	// Restore the window to its original position.

	this.frame.style.left = initLt;
}

//=============================================================================
// Window Methods
//=============================================================================

function winOpen() {

	if (this.isOpen)
		return;

	// Restore the window and make it visible.

	this.makeActive();
	this.isOpen = true;
	if (this.isMinimized)
		this.restore();
	this.frame.style.visibility = "visible";
	this.frame.style.zIndex = 1100;
}

function winClose() {

	// Hide the window.

	this.frame.style.visibility = "hidden";
	this.isOpen = false;
}

function winMinimize() {

	if (!this.isOpen || this.isMinimized)
		return;

	this.makeActive();

	// Save current frame and title bar text widths.

	this.restoreFrameWidth = this.frame.style.width;
	this.restoreTextWidth = this.titleBarText.style.width;

	// Disable client area display.

	this.clientArea.style.display = "none";

	// Minimize frame and title bar text widths.

	if (this.minimumWidth)
		this.frame.style.width = this.minimumWidth + "px";
	else
		this.frame.style.width = "";
	this.titleBarText.style.width = winCtrl.minimizedTextWidth + "px";

	this.isMinimized = true;
}

function winRestore() {

	if (!this.isOpen || !this.isMinimized)
		return;

	this.makeActive();

	// Enable client area display.

	this.clientArea.style.display = "";

	// Restore frame and title bar text widths.

	this.frame.style.width = this.restoreFrameWidth;
	this.titleBarText.style.width = this.restoreTextWidth;

	this.isMinimized = false;
}

function winMakeActive() {

	if (winCtrl.active == this)
		return;

	// Inactivate the currently active window.

	if (winCtrl.active) {
		winCtrl.active.frame.style.backgroundColor    = winCtrl.inactiveFrameBackgroundColor;
		winCtrl.active.frame.style.borderColor        = winCtrl.inactiveFrameBorderColor;
		winCtrl.active.titleBar.style.backgroundColor = winCtrl.inactiveTitleBarColor;
		winCtrl.active.titleBar.style.color           = winCtrl.inactiveTitleTextColor;
		winCtrl.active.clientArea.style.borderColor   = winCtrl.inactiveClientAreaBorderColor;
		if (browser.isIE)
			winCtrl.active.clientArea.style.scrollbarBaseColor = winCtrl.inactiveClientAreaScrollbarColor;
		if (browser.isNS && browser.version < 6.1)
			winCtrl.active.clientArea.style.overflow = "hidden";
		if (winCtrl.active.inactiveButtonsImage)
		winCtrl.active.titleBarButtons.src = winCtrl.active.inactiveButtonsImage;
	}

	// Activate this window.

	this.frame.style.backgroundColor    = this.activeFrameBackgroundColor;
	this.frame.style.borderColor        = this.activeFrameBorderColor;
	this.titleBar.style.backgroundColor = this.activeTitleBarColor;
	this.titleBar.style.color           = this.activeTitleTextColor;
	this.clientArea.style.borderColor   = this.activeClientAreaBorderColor;
	if (browser.isIE)
		this.clientArea.style.scrollbarBaseColor = this.activeClientAreaScrollbarColor;
	if (browser.isNS && browser.version < 6.1)
		this.clientArea.style.overflow = "auto";
	if (this.inactiveButtonsImage)
		this.titleBarButtons.src = this.activeButtonsImage;
	this.frame.style.zIndex = ++winCtrl.maxzIndex;
	winCtrl.active = this;
}

//=============================================================================
// Event handlers.
//=============================================================================

function winClientAreaClick(event) {

	// Make this window the active one.

	this.parentWindow.makeActive();
}

//-----------------------------------------------------------------------------
// Window dragging.
//-----------------------------------------------------------------------------

function winMoveDragStart(event) {

	var target;
	var x, y;

	if (browser.isIE)
		target = window.event.srcElement.tagName;
	if (browser.isNS)
		target = event.target.tagName;

	if (target == "AREA")
		return;

	this.parentWindow.makeActive();

	// Get cursor offset from window frame.

	if (browser.isIE) {
		x = window.event.x;
		y = window.event.y;
	}
	if (browser.isNS) {
		x = event.pageX;
		y = event.pageY;
	}
	winCtrl.xOffset = winCtrl.active.frame.offsetLeft - x;
	winCtrl.yOffset = winCtrl.active.frame.offsetTop  - y;

	// Set document to capture mousemove and mouseup events.

	if (browser.isIE) {
		document.onmousemove = winMoveDragGo;
		document.onmouseup   = winMoveDragStop;
	}
	if (browser.isNS) {
		document.addEventListener("mousemove", winMoveDragGo,   true);
		document.addEventListener("mouseup",   winMoveDragStop, true);
		event.preventDefault();
	}

	winCtrl.inMoveDrag = true;
}

function winMoveDragGo(event) {

	var x, y;

	if (!winCtrl.inMoveDrag)
		return;

	// Get cursor position.

	if (browser.isIE) {
		x = window.event.x;
		y = window.event.y;
		window.event.cancelBubble = true;
		window.event.returnValue = false;
	}
	if (browser.isNS) {
		x = event.pageX;
		y = event.pageY;
		event.preventDefault();
	}

	// Move window frame based on offset from cursor.

	winCtrl.active.frame.style.left = (x + winCtrl.xOffset) + "px";
	winCtrl.active.frame.style.top  = (y + winCtrl.yOffset) + "px";
}

function winMoveDragStop(event) {

	winCtrl.inMoveDrag = false;

	// Remove mousemove and mouseup event captures on document.

	if (browser.isIE) {
		document.onmousemove = null;
		document.onmouseup   = null;
	}
	if (browser.isNS) {
		document.removeEventListener("mousemove", winMoveDragGo,   true);
		document.removeEventListener("mouseup",   winMoveDragStop, true);
	}
}

//-----------------------------------------------------------------------------
// Window resizing.
//-----------------------------------------------------------------------------

function winResizeCursorSet(event) {

	var target;
	var xOff, yOff;

	if (this.parentWindow.isMinimized || winCtrl.inResizeDrag)
		return;

	// If not on window frame, restore cursor and exit.

	if (browser.isIE)
		target = window.event.srcElement;
	if (browser.isNS)
		target = event.target;
	if (target != this.parentWindow.frame)
		return;

	// Find resize direction.

	if (browser.isIE) {
		xOff = window.event.offsetX;
		yOff = window.event.offsetY;
	}
	if (browser.isNS) {
		xOff = event.layerX;
		yOff = event.layerY;
	}
	winCtrl.resizeDirection = ""
	if (yOff <= winCtrl.resizeCornerSize)
		winCtrl.resizeDirection += "n";
	else if (yOff >= this.parentWindow.frame.offsetHeight - winCtrl.resizeCornerSize)
		winCtrl.resizeDirection += "s";
	if (xOff <= winCtrl.resizeCornerSize)
		winCtrl.resizeDirection += "w";
	else if (xOff >= this.parentWindow.frame.offsetWidth - winCtrl.resizeCornerSize)
		winCtrl.resizeDirection += "e";

	// If not on window edge, restore cursor and exit.

	if (winCtrl.resizeDirection == "") {
		this.onmouseout(event);
		return;
	}

	// Change cursor.

	if (browser.isIE)
		document.body.style.cursor = winCtrl.resizeDirection + "-resize";
	if (browser.isNS)
		this.parentWindow.frame.style.cursor = winCtrl.resizeDirection + "-resize";
}

function winResizeCursorRestore(event) {

	if (winCtrl.inResizeDrag)
		return;

	// Restore cursor.

	if (browser.isIE)
		document.body.style.cursor = "";
	if (browser.isNS)
		this.parentWindow.frame.style.cursor = "";
}

function winResizeDragStart(event) {

	var target;

	// Make sure the event is on the window frame.

	if (browser.isIE)
		target = window.event.srcElement;
	if (browser.isNS)
		target = event.target;
	if (target != this.parentWindow.frame)
		return;

	this.parentWindow.makeActive();

	if (this.parentWindow.isMinimized)
		return;

	// Save cursor position.

	if (browser.isIE) {
		winCtrl.xPosition = window.event.x;
		winCtrl.yPosition = window.event.y;
	}
	if (browser.isNS) {
		winCtrl.xPosition = event.pageX;
		winCtrl.yPosition = event.pageY;
	}

	// Save window frame position and current window size.

	winCtrl.oldLeft   = parseInt(this.parentWindow.frame.style.left,  10);
	winCtrl.oldTop    = parseInt(this.parentWindow.frame.style.top,   10);
	winCtrl.oldWidth  = parseInt(this.parentWindow.frame.style.width, 10);
	winCtrl.oldHeight = parseInt(this.parentWindow.clientArea.style.height, 10);

	// Set document to capture mousemove and mouseup events.

	if (browser.isIE) {
		document.onmousemove = winResizeDragGo;
		document.onmouseup   = winResizeDragStop;
	}
	if (browser.isNS) {
		document.addEventListener("mousemove", winResizeDragGo,   true);
		document.addEventListener("mouseup"  , winResizeDragStop, true);
		event.preventDefault();
	}

	winCtrl.inResizeDrag = true;
}

function winResizeDragGo(event) {

	var north, south, east, west;
	var dx, dy;
	var w, h;

	if (!winCtrl.inResizeDrag)
		return;

	// Set direction flags based on original resize direction.

	north = false;
	south = false;
	east  = false;
	west  = false;
	if (winCtrl.resizeDirection.charAt(0) == "n")
		north = true;
	if (winCtrl.resizeDirection.charAt(0) == "s")
		south = true;
	if (winCtrl.resizeDirection.charAt(0) == "e" || winCtrl.resizeDirection.charAt(1) == "e")
		east = true;
	if (winCtrl.resizeDirection.charAt(0) == "w" || winCtrl.resizeDirection.charAt(1) == "w")
		west = true;

	// Find change in cursor position.

	if (browser.isIE) {
		dx = window.event.x - winCtrl.xPosition;
		dy = window.event.y - winCtrl.yPosition;
	}
	if (browser.isNS) {
		dx = event.pageX - winCtrl.xPosition;
		dy = event.pageY - winCtrl.yPosition;
	}

	// If resizing north or west, reverse corresponding amount.

	if (west)
		dx = -dx;
	if (north)
		dy = -dy;

	// Check new size.

	w = winCtrl.oldWidth  + dx;
	h = winCtrl.oldHeight + dy;
	if (w <= winCtrl.active.minimumWidth) {
		w = winCtrl.active.minimumWidth;
		dx = w - winCtrl.oldWidth;
	}
	if (h <= winCtrl.active.minimumHeight) {
		h = winCtrl.active.minimumHeight;
		dy = h - winCtrl.oldHeight;
	}

	// Resize the window. For IE, keep client area and frame widths in synch.

	if (east || west) {
		winCtrl.active.frame.style.width = w + "px";
		if (browser.isIE)
			winCtrl.active.clientArea.style.width = (w - winCtrl.active.widthDiff) + "px";
	}
	if (north || south)
		winCtrl.active.clientArea.style.height = h + "px";

	// Clip the title bar text, if necessary.

	if (east || west) {
		if (w < winCtrl.active.clipTextMinimumWidth)
			winCtrl.active.titleBarText.style.width = (winCtrl.minimizedTextWidth + w - winCtrl.active.minimumWidth) + "px";
		else
			winCtrl.active.titleBarText.style.width = "";
	}

	// For a north or west resize, move the window.

	if (west)
		winCtrl.active.frame.style.left = (winCtrl.oldLeft - dx) + "px";
	if (north)
		winCtrl.active.frame.style.top  = (winCtrl.oldTop  - dy) + "px";

	if (browser.isIE) {
		window.event.cancelBubble = true;
		window.event.returnValue = false;
	}
	if (browser.isNS)
		event.preventDefault();
}

function winResizeDragStop(event) {

	winCtrl.inResizeDrag = false;

	// Remove mousemove and mouseup event captures on document.

	if (browser.isIE) {
		document.onmousemove = null;
		document.onmouseup   = null;
	}
	if (browser.isNS) {
		document.removeEventListener("mousemove", winResizeDragGo,   true);
		document.removeEventListener("mouseup"  , winResizeDragStop, true);
	}
}

//=============================================================================
// Utility functions.
//=============================================================================

function winFindByClassName(el, className) {

	var i, tmp;

	if (el.className == className)
		return el;

	// Search for a descendant element assigned the given class.

	for (i = 0; i < el.childNodes.length; i++) {
		tmp = winFindByClassName(el.childNodes[i], className);
		if (tmp != null)
			return tmp;
	}

	return null;
}

//=============================================================================
// Initialization code.
//=============================================================================

var winList = new Array();
var winCtrl = new Object();

function winInit() {

	var elList;

	// Initialize window control object.

	winCtrl.maxzIndex                        =   0;
	winCtrl.resizeCornerSize                 =  16;
	winCtrl.minimizedTextWidth               = 100;
	winCtrl.inactiveFrameBackgroundColor     = "#c0c0c0";
	winCtrl.inactiveFrameBorderColor         = "#f0f0f0 #505050 #404040 #e0e0e0";
	winCtrl.inactiveTitleBarColor            = "#808080";
	winCtrl.inactiveTitleTextColor           = "#c0c0c0";
	winCtrl.inactiveClientAreaBorderColor    = "#404040 #e0e0e0 #f0f0f0 #505050";
	winCtrl.inactiveClientAreaScrollbarColor = "";
	winCtrl.inMoveDrag                       = false;
	winCtrl.inResizeDrag                     = false;

	// Initialize windows and build list.

	elList = document.getElementsByTagName("DIV");
	for (var i = 0; i < elList.length; i++)
		if (elList[i].className == "window1")
			winList[elList[i].id] = new Window(elList[i]);
}

//window.onload = winInit;  // run initialization code after page loads.