var imageDB;
var MAX_IMAGES = 36;
var MIN_IMAGES = 0;
var IMAGE_WIDTH = 400;
var IMAGE_HEIGHT = 269;
var current_image = MIN_IMAGES;
var gblImageParam = "myImage";

//pre-cache the images
var myImages = new Array("WallyJoeDiningRoom", "WallyJoeDiningRoom2", "WallyJoeTable", "WallyJoeBarEntrance",
	"WallyJoeBar", "gallery1", "gallery2", "gallery3", "gallery4", "gallery5", "gallery6", "gallery7",
	"gallery8", "gallery9", "gallery10", "gallery12", "gallery13", "gallery14", "gallery15",
	"gallery16", "gallery17", "gallery18", "gallery19", "gallery20", "gallery21", "gallery22", "gallery23",
	 "gallery24", "gallery25", "gallery26", "gallery27","gallery28", "gallery29", "gallery30", "gallery31",
	  "gallery32");
imageDB = new Array(MAX_IMAGES);
for(var i = 0; i < imageDB.length; i++)
{
	imageDB[i]= new Image(IMAGE_WIDTH, IMAGE_HEIGHT);
	imageDB[i].src = "image_files/" + myImages[i] + ".jpg";
}

function getNextImage(form)
{
	current_image++;
	if(current_image == (MAX_IMAGES))
	{
		current_image = MIN_IMAGES;
	}
	document.getElementById(gblImageParam).src = imageDB[current_image].src;
}

function getPreviousImage(form)
{
	current_image--;
	if(current_image < MIN_IMAGES)
	{
		current_image = MAX_IMAGES - 1;
	}
	document.getElementById(gblImageParam).src = imageDB[current_image].src;
}