var numImages = 32;
var nextImageToShowIndex = 2;
var direction = +1;

var myImages = new Array();
myImages[0]="portfolio-images/four-drinks.jpg";
myImages[1]="portfolio-images/group-drinks-green-bg.jpg";
myImages[2]="portfolio-images/group-drinks-yellow-bg.jpg";
myImages[3]="portfolio-images/queenspark-swizzle.jpg";
myImages[4]="portfolio-images/cut-open-005.jpg";
myImages[5]="portfolio-images/beauty-016.jpg";
myImages[6]="portfolio-images/soba.jpg";
myImages[7]="portfolio-images/soup.jpg";
myImages[8]="portfolio-images/sushi.jpg";
myImages[9]="portfolio-images/sweets-046.jpg";
myImages[10]="portfolio-images/sweets-059.jpg";
myImages[11]="portfolio-images/cocktail-opener.jpg";
myImages[12]="portfolio-images/harrahs_tr_man_print_ko.jpg";
myImages[13]="portfolio-images/harrahs_tr_woman_print_viet.jpg";
myImages[14]="portfolio-images/Hector-038814-2.jpg";
myImages[15]="portfolio-images/Hector-038977-2.jpg";
myImages[16]="portfolio-images/Hector-039038-3.jpg";
myImages[17]="portfolio-images/Hector_tax_080358-2.jpg";
myImages[18]="portfolio-images/Hector_tax_080436-2.jpg";
myImages[19]="portfolio-images/Mamiesandwich.jpg";
myImages[20]="portfolio-images/Mamiepie-copy.jpg";
myImages[21]="portfolio-images/Mamie_soda-copy.jpg";
myImages[22]="portfolio-images/HECTOR_094481.jpg";
myImages[23]="portfolio-images/FP67.jpg";
myImages[24]="portfolio-images/FP66.jpg";
myImages[25]="portfolio-images/DQ000306_080.jpg";
myImages[26]="portfolio-images/DQ000306_041.jpg";
myImages[27]="portfolio-images/DQ000306_025.jpg";
myImages[28]="portfolio-images/092803_Test_Citrus__279.jpg";
myImages[29]="portfolio-images/092803_Test_Citrus__133.jpg";
myImages[30]="portfolio-images/Whoopie-Pie.jpg";
myImages[31]="portfolio-images/Lemon-Tart-Cut-Open.jpg";

/* prevImage */
function prevImage()
{
	if( direction == +1 )
	{
		nextImageToShowIndex -= 2;
	}
	else
	{
		nextImageToShowIndex--;
	}
	direction = -1;

	if( nextImageToShowIndex < 0 )
	{
		nextImageToShowIndex = 0;
	}

//document.getElementById("test").innerHTML = "nextImageToShowIndex = " + nextImageToShowIndex;

	if( nextImageToShowIndex%2 == 0 )
	{
		document.getElementById("leftimage").src = myImages[ nextImageToShowIndex ];
	}
	else
	{
		document.getElementById("rightimage").src = myImages[ nextImageToShowIndex];
	}
}


/* nextImage */
function nextImage()
{
	if( direction === -1 )
	{
		nextImageToShowIndex += 2;
	}
	else
	{
		nextImageToShowIndex++;
	}
	direction = +1;

	if( nextImageToShowIndex >= numImages )
	{
		nextImageToShowIndex = numImages - 1;
	}

//document.getElementById("test").innerHTML = "nextImageToShowIndex = " + nextImageToShowIndex;

	if( nextImageToShowIndex%2 == 0 )
	{
		document.getElementById("leftimage").src = myImages[ nextImageToShowIndex ];
	}
	else
	{
		document.getElementById("rightimage").src = myImages[ nextImageToShowIndex];
	}
}