var images_to_swap 	= new Array('KB_GreenHouse_450x236.jpg', 'BA-PIRCteam_450x236.jpg', 'TW.ZEH_450x236.jpg', 'BA-PIRC_MH-Lab.jpg');
var images_alts		= new Array('A picture of the BA-PIRC team.','A picture of the TW ZEH.','A picture of the KB Home GreenHouse at the 2011 International Builders Show.', 'A picture of the manufactured housing lab.');
var i 				= 0;
var img_index		= 2;
var wait 			= 6000;

function swapImage( sContainerID, sImagePath ) 
{
	// Create a new element
	myE = createDOM( 'img', { 'id':sContainerID, 'src':sImagePath, 'width':'450', 'height':'236', 'alt':images_alts[img_index] } );

	// Swap the old element for the new one.
	swapDOM( sContainerID, myE );
	
	if( i == 0 )
	{
		// Increment i to 1.
		i = 1;
	}
	else
	{
		// Decrement i to 0.
		i = 0;
	}
	
	// Iterate image index with MOD 3.
	img_index++;
	if (img_index == 4) img_index = 0;
}

function swapfade() 
{
	if( i == 0 )
	{
		// fade 0 - appear 1
		fade('Image0Container', { duration:3, from:1.0, to:0.0 });
		appear('Image1Container', { duration:3, from:0.0, to:1.0, afterFinish: function (){ swapImage( 'Image0', ('index_images/' + images_to_swap[img_index]) ); } });
	}
	else
	{
		// fade 1 - appear 0
		fade('Image1Container', { duration:3, from:1.0, to:0.0 });
		appear('Image0Container', { duration:3, from:0.0, to:1.0, afterFinish: function(){ swapImage( 'Image1', ('index_images/' + images_to_swap[img_index]) ) ; } });
	}
}

function kickit()
{
	setInterval('swapfade()',wait);
}

addLoadEvent(kickit);