/*
		-rotation
		---------------------
		This is meant to be used in the right column, between the ad banners. It is hoped implementation will be as simple as pasting the following line into the HTML:
		
		<script language="JavaScript" type="text/javascript" src="/js/keynote-logo-rotation.js"></script>
		
		Note that this is located in the root of the website, to facilitate simultaneous use by multiple sub-directories (lasvegas, newyork, etc) if so desired.		
	*/
	
	// Initialize the arrays:
	var keynote_img = new Array();
	var keynote_preloader = new Array();
	var keynote_text = new Array();
	
	// Declare variables for use as the beginning and close of the image source paths:
	var keynote_img_path = "http://acme.medialiveinternational.com/speakers/";
	var keynote_img_ext = ".jpg";
	
	// This will be incremented and used as the number of the array elements that follow:
	var x = 0;
	
	// To add a new item to the array, copy the 4 lines that constitute one full item.
	// Once copied, increment the [number] of the array by one, and change the values 
	// as appropriate.
	// 
	// Here is what each line does:
	// --------------------------------------------------------------------------------
	// - First item is the descriptive text to appear above the logo.
	// - Second, the name of the image to use.
	// - Third is the width and height respectively of the image.
	// - Fourth increments the variable 'x' by 1. This needs no editing, but must be present for each item. We use 
	//   this instead of hard-coding the numbers of the array elements (ie: [0], [1], [2], etc) because often 
	//   marketing is going to need to swap in and out new items. If we hard-coded the number of the array 
	//   elements, and someone wanted to squeeze a new keynote between items 3 and 4, the old 4 becomes 5, old 5 
	//   becomes 6, and so on. This way we don't have to manually update that every time a change is requested.
	// 
	
		keynote_img[x] = "william-eggers-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>William Eggers</strong><br />Global Director, Public Sector Industry<br /> Deloitte Research<br />";
		x = x + 1;
		
		keynote_img[x] = "corinne-charette-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Corinne Charette</strong><br />Chief Information Officer of the Government of Canada";
		x = x + 1;
		
		keynote_img[x] = "jim-davies-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Jim Davies</strong><br />Chief Technology Officer, Mitel";
		x = x + 1;
		
		keynote_img[x] = "john-clarkson-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>John Clarkson</strong><br />Deputy Minister of the Department of Innovation, Energy and Mines in the Province of Manitoba";
		x = x + 1;
		
		
		keynote_img[x] = "tony-clement-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Tony Clement</strong><br />President of the Treasury Board and Minister for FedNor";
		x = x + 1;


		keynote_img[x] = "jeanette-horan-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Jeanette Horan</strong><br />Vice President and Chief Information Officer, IBM";
		x = x + 1;
		
		
		keynote_img[x] = "dean-carol-stephenson-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Dean Carol Stephenson, O.C.</strong><br />Lawrence G. Tapp Chair in Leadership, Richard Ivey School of Business, The University of Western Ontario";
		x = x + 1;
		
		keynote_img[x] = "katherine-c-garcia-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Katherine C. Garcia</strong><br />Senior Vice President, Applications Services, HP Enterprise Services, Hewlett-Packard Company ";
		x = x + 1;

		keynote_img[x] = "liseanne-forand-rounded-sm";
		keynote_preloader[x] = new Image(82,82);
		keynote_text[x] = "<strong>Liseanne Forand</strong><br />President of Shared Services Canada";
		x = x + 1;

// We need to pre-load the images in the array above, to minimize delays in display which could set the 
	// associated text out of synch with the logos as they are swapped.
	// 
	// Since keynote_preloader[0].src will be exactly the same as keynote_preloader[100].src with the exception 
	// of the number of the array (0 vs. 100 in the example), we can use the following loop to write this 
	// entire section of the array for us.
	// 
	for (i=0; i<keynote_preloader.length; i++) {
		keynote_preloader[i].src = keynote_img_path + keynote_img[i] + keynote_img_ext;
	}
	
	
	// This is the timer function:
	var k = 0;
	var timer = setTimeout("changeKey()",10000); // 5000 = 5 second delay between items

	function changeKey() {
		k = k+1;
		if(k == keynote_text.length) { // the max no. of times to loop is keying off the length of 'keynote_text()'
			k = 0;
		}
		
		// Insert text description
		document.getElementById('keynote_text_rotation').innerHTML = keynote_text[k];

        // Insert image source
		document.getElementById('keynote_img_rotation').src = keynote_img_path + keynote_img[k] + keynote_img_ext;	
		

		
		time = setTimeout("changeKey()",5000); // 5000 = 5 second delay between items
	}
	
	
	// Below, we write the entire UI, including the CSS, in JavaScript. If a user does not have JavaScript 
	// turned on, they won't see anything at all.
	
	var keynote_img_ui = ""; // initialize
	keynote_img_ui += "		<div align='center' style='width:125px;'><img src='" + keynote_img_path + keynote_img[0] + keynote_img_ext + "' alt='' border='0' id='keynote_img_rotation' style='border: none ! important;' />";
	keynote_img_ui += "		<br clear='all' /><div id='keynote_text_rotation' align='center'>" + keynote_text[0] + "</div></div>";
	
	
	// Write the UI elements:
	document.write(keynote_img_ui);