// 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 = 10;
var yOffset = 10;

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);
}