// Copyright © 2000 by Apple Computer, Inc., All Rights Reserved.
//
// You may incorporate this Apple sample code into your own code
// without restriction. This Apple sample code has been provided "AS IS"
// and the responsibility for its operation is yours. You may redistribute
// this code, but you are not permitted to redistribute it as
// "Apple sample code" after having made changes.
// ********************************
// application-specific functions *
// ********************************

// store variables to control where the popup will appear relative to the cursor position
// positive numbers are below and to the right of the cursor, negative numbers are above and to the left
var xOffset = 30;
var yOffset = -30;

function showPopup (targetObjectId, eventObj) {
        if(eventObj) {
        // hide any currently-visible popups
        hideCurrentPopup();
        // stop event from bubbling up any farther
        eventObj.cancelBubble = true;
        // move popup div to current cursor position 
        // (add scrollTop to account for scrolling for IE)
        var newXCoordinate = (eventObj.pageX)?eventObj.pageX + xOffset:eventObj.x + xOffset + ((document.body.scrollLeft)?document.body.scrollLeft:0);
        var newYCoordinate = (eventObj.pageY)?eventObj.pageY + yOffset:eventObj.y + yOffset + ((document.body.scrollTop)?document.body.scrollTop:0);
        moveObject(targetObjectId, newXCoordinate, newYCoordinate);
        // and make it visible
        if( changeObjectVisibility(targetObjectId, 'visible') ) {
                // if we successfully showed the popup
                // store its Id on a globally-accessible object
                window.currentlyVisiblePopup = targetObjectId;
                return true;
        } else {
                // we couldn't show the popup, boo hoo!
                return false;
        }
        } else {
        // there was no event object, so we won't be able to position anything, so give up
        return false;
        }
} // showPopup

function hideCurrentPopup() {
        // note: we've stored the currently-visible popup on the global object window.currentlyVisiblePopup
        if(window.currentlyVisiblePopup) {
        changeObjectVisibility(window.currentlyVisiblePopup, 'hidden');
        window.currentlyVisiblePopup = false;
        }
} // hideCurrentPopup



// ***********************
// hacks and workarounds *
// ***********************

// initialize hacks whenever the page loads
window.onload = initializeHacks;

// setup an event handler to hide popups for generic clicks on the document
document.onclick = hideCurrentPopup;

function initializeHacks() {
        // this ugly little hack resizes a blank div to make sure you can click
        // anywhere in the window for Mac MSIE 5
        if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
        && (navigator.platform.indexOf('Mac') != -1)
        && getStyleObject('blankDiv')) {
        window.onresize = explorerMacResizeFix;
        }
        resizeBlankDiv();
        // this next function creates a placeholder object for older browsers
        createFakeEventObj();
}

function createFakeEventObj() {
        // create a fake event object for older browsers to avoid errors in function call
        // when we need to pass the event object to functions
        if (!window.event) {
        window.event = false;
        }
} // createFakeEventObj

function resizeBlankDiv() {
        // resize blank placeholder div so IE 5 on mac will get all clicks in window
        if ((navigator.appVersion.indexOf('MSIE 5') != -1) 
        && (navigator.platform.indexOf('Mac') != -1)
        && getStyleObject('blankDiv')) {
        getStyleObject('blankDiv').width = document.body.clientWidth - 20;
        getStyleObject('blankDiv').height = document.body.clientHeight - 20;
        }
}

function explorerMacResizeFix () {
        location.reload(false);
}