/*
PopupWindow.js

DESCRIPTION: This object allows you to easily and quickly popup a window
in a certain place. The window can either be a DIV or a separate browser
window.

COMPATABILITY: Works with Netscape 4.x, 6.x, IE 5.x on Windows. Some small
positioning errors - usually with Window positioning - occur on the
Macintosh platform. Due to bugs in Netscape 4.x, populating the popup
window with <STYLE> tags may cause errors.

USAGE:
// Create an object for a WINDOW popup
var win = new PopupWindow();

// Create an object for a DIV window using the DIV named 'mydiv'
var win = new PopupWindow('mydiv');

// Set the window to automatically hide itself when the user clicks
// anywhere else on the page except the popup
win.autoHide();

// Show the window relative to the anchor name passed in
win.showPopup(anchorname);

// Hide the popup
win.hidePopup();

// Set the size of the popup window (only applies to WINDOW popups
win.setSize(width,height);

// Populate the contents of the popup window that will be shown. If you
// change the contents while it is displayed, you will need to refresh()
win.populate(string);

// Refresh the contents of the popup
win.refresh();

// Specify how many pixels to the right of the anchor the popup will appear
win.offsetX = 50;

// Specify how many pixels below the anchor the popup will appear
win.offsetY = 100;

NOTES:
1) Requires the functions in AnchorPosition.js

2) Your anchor tag MUST contain both NAME and ID attributes which are the
   same. For example:
   <A NAME="test" ID="test"> </A>

3) There must be at least a space between <A> </A> for IE5.5 to see the
   anchor tag correctly. Do not do <A></A> with no space.

4) When a PopupWindow object is created, a handler for 'onmouseup' is
   attached to any event handler you may have already defined. Do NOT define
   an event handler for 'onmouseup' after you define a PopupWindow object or
   the autoHide() will not work correctly.
*/

// Set the position of the popup window based on the anchor
function PopupWindow_getXYPosition(anchorname) {
        var coordinates;
        if (this.type == "WINDOW") {
                coordinates = getAnchorWindowPosition(anchorname);
                }
        else {
                coordinates = getAnchorPosition(anchorname);
                }
        this.x = coordinates.x;
        this.y = coordinates.y;
        }
// Set width/height of DIV/popup window
function PopupWindow_setSize(width,height) {
        this.width = width;
        this.height = height;
        }
// Fill the window with contents
function PopupWindow_populate(contents) {
        this.contents = contents;
        this.populated = false;
        }
// Refresh the displayed contents of the popup
function PopupWindow_refresh() {
        if (this.divName != null) {
                // refresh the DIV object
                if (this.use_gebi) {
                        document.getElementById(this.divName).innerHTML = this.contents;
                        }
                else if (this.use_css) {
                        document.all[this.divName].innerHTML = this.contents;
                        }
                else if (this.use_layers) {
                        var d = document.layers[this.divName];
                        d.document.open();
                        d.document.writeln(this.contents);
                        d.document.close();
                        }
                }
        else {
                if (this.popupWindow != null && !this.popupWindow.closed) {
                        this.popupWindow.document.open();
                        this.popupWindow.document.writeln(this.contents);
                        this.popupWindow.document.close();
                        this.popupWindow.focus();
                        }
                }
        }
// Position and show the popup, relative to an anchor object
function PopupWindow_showPopup(anchorname) {
        this.getXYPosition(anchorname);
        this.x += this.offsetX;
        this.y += this.offsetY;
        if (!this.populated && (this.contents != "")) {
                this.populated = true;
                this.refresh();
                }
        if (this.divName != null) {
                // Show the DIV object
                if (this.use_gebi) {
                        document.getElementById(this.divName).style.left = this.x;
                        document.getElementById(this.divName).style.top = this.y;
                        document.getElementById(this.divName).style.visibility = "visible";
                        }
                else if (this.use_css) {
                        document.all[this.divName].style.left = this.x;
                        document.all[this.divName].style.top = this.y;
                        document.all[this.divName].style.visibility = "visible";
                        }
                else if (this.use_layers) {
                        document.layers[this.divName].left = this.x;
                        document.layers[this.divName].top = this.y;
                        document.layers[this.divName].visibility = "visible";
                        }
                }
        else {
                if (this.popupWindow == null || this.popupWindow.closed) {
                        // If the popup window will go off-screen, move it so it doesn't
                        if (screen && screen.availHeight) {
                                if ((this.y + this.height) > screen.availHeight) {
                                        this.y = screen.availHeight - this.height;
                                        }
                                }
                        if (screen && screen.availWidth) {
                                if ((this.x + this.width) > screen.availWidth) {
                                        this.x = screen.availWidth - this.width;
                                        }
                                }
                        this.popupWindow = window.open("about:blank","window_"+anchorname,"toolbar=no,location=no,status=no,menubar=no,scrollbars=auto,resizable,alwaysRaised,dependent,titlebar=no,width="+this.width+",height="+this.height+",screenX="+this.x+",left="+this.x+",screenY="+this.y+",top="+this.y+"");
                        }
                this.refresh();
                }
        }
// Hide the popup
function PopupWindow_hidePopup() {
        if (this.divName != null) {
                if (this.use_gebi) {
                        document.getElementById(this.divName).style.visibility = "hidden";
                        }
                else if (this.use_css) {
                        document.all[this.divName].style.visibility = "hidden";
                        }
                else if (this.use_layers) {
                        document.layers[this.divName].visibility = "hidden";
                        }
                }
        else {
                if (this.popupWindow && !this.popupWindow.closed) {
                        this.popupWindow.close();
                        this.popupWindow = null;
                        }
                }
        }
// Pass an event and return whether or not it was the popup DIV that was clicked
function PopupWindow_isClicked(e) {
        if (this.divName != null) {
                if (this.use_layers) {
                        var clickX = e.pageX;
                        var clickY = e.pageY;
                        var t = document.layers[this.divName];
                        if ((clickX > t.left) && (clickX < t.left+t.clip.width) && (clickY > t.top) && (clickY < t.top+t.clip.height)) {
                                return true;
                                }
                        else { return false; }
                        }
                else if (document.all) { // Need to hard-code this to trap IE for error-handling
                        var t = window.event.srcElement;
                        while (t.parentElement != null) {
                                if (t.id==this.divName) {
                                        return true;
                                        }
                                t = t.parentElement;
                                }
                        return false;
                        }
                else if (this.use_gebi) {
                        var t = e.originalTarget;
                        while (t.parentNode != null) {
                                if (t.id==this.divName) {
                                        return true;
                                        }
                                t = t.parentNode;
                                }
                        return false;
                        }
                return false;
                }
        return false;
        }

// Check an onMouseDown event to see if we should hide
function PopupWindow_hideIfNotClicked(e) {
        if (this.autoHideEnabled && !this.isClicked(e)) {
                this.hidePopup();
                }
        }
// Call this to make the DIV disable automatically when mouse is clicked outside it
function PopupWindow_autoHide() {
        this.autoHideEnabled = true;
        }
// This global function checks all PopupWindow objects onmouseup to see if they should be hidden
function PopupWindow_hidePopupWindows(e) {
        for (var i=0; i<popupWindowObjects.length; i++) {
                if (popupWindowObjects[i] != null) {
                        var p = popupWindowObjects[i];
                        p.hideIfNotClicked(e);
                        }
                }
        }
// Run this immediately to attach the event listener
function PopupWindow_attachListener() {
        if (document.layers) {
                document.captureEvents(Event.MOUSEUP);
                }
        window.popupWindowOldEventListener = document.onmouseup;
        if (window.popupWindowOldEventListener != null) {
                document.onmouseup = new Function("window.popupWindowOldEventListener(); PopupWindow_hidePopupWindows();");
                }
        else {
                document.onmouseup = PopupWindow_hidePopupWindows;
                }
        }
// CONSTRUCTOR for the PopupWindow object
// Pass it a DIV name to use a DHTML popup, otherwise will default to window popup
function PopupWindow() {
        if (!window.popupWindowIndex) { window.popupWindowIndex = 0; }
        if (!window.popupWindowObjects) { window.popupWindowObjects = new Array(); }
        if (!window.listenerAttached) {
                window.listenerAttached = true;
                PopupWindow_attachListener();
                }
        this.index = popupWindowIndex++;
        popupWindowObjects[this.index] = this;
        this.divName = null;
        this.popupWindow = null;
        this.width=0;
        this.height=0;
        this.populated = false;
        this.visible = false;
        this.autoHideEnabled = false;

        this.contents = "";
        if (arguments.length>0) {
                this.type="DIV";
                this.divName = arguments[0];
                }
        else {
                this.type="WINDOW";
                }
        this.use_gebi = false;
        this.use_css = false;
        this.use_layers = false;
        if (document.getElementById) { this.use_gebi = true; }
        else if (document.all) { this.use_css = true; }
        else if (document.layers) { this.use_layers = true; }
        else { this.type = "WINDOW"; }
        this.offsetX = 0;
        this.offsetY = 0;
        // Method mappings
        this.getXYPosition = PopupWindow_getXYPosition;
        this.populate = PopupWindow_populate;
        this.refresh = PopupWindow_refresh;
        this.showPopup = PopupWindow_showPopup;
        this.hidePopup = PopupWindow_hidePopup;
        this.setSize = PopupWindow_setSize;
        this.isClicked = PopupWindow_isClicked;
        this.autoHide = PopupWindow_autoHide;
        this.hideIfNotClicked = PopupWindow_hideIfNotClicked;
        }