// 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 = 20;

var yOffset = 0;



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);

}