// Set Global Variables & initial values
var imageNum = 0
var HiResImage = "Images/Group/High_Res/Group_0001.jpg"
var HiResWidth = 720
var HiResHeight = 409

// Function to place selected Preview image in space below thumbnails

function showPreview(imageNum,URL,detailWidth,detailHeight) {

	// Pass the array number of the Preview image (from the selected thumbnail) to the function
	// plus the URL/path to the Hi Res image, its width and its height
	// The "selectedPreview" is defined from the array

	selectedPreview = new Image(Gallery[imageNum].Width,Gallery[imageNum].Height)
	selectedPreview.src = Gallery[imageNum].Image
	document.PreviewImage.src = selectedPreview.src
	
	HiResImage = URL			// Put the passed variables into the global variables
	HiResWidth = detailWidth	// for use in the openWindow function
	HiResHeight = detailHeight
	
	}
	
// When preview image is clicked, open a new window and show the current "HiResImage"
	
function openWindow() {

	var features = "WIDTH="+HiResWidth+",HEIGHT="+HiResHeight+",scrollbars=yes,resizable=yes"
	var newWindow = window.open(HiResImage,"DetailWindow",features)
	}

// Define photo array variable for all the Preview images with 3 elements (image, width, height)

function Photo(Image,Width,Height)
	{
	this.Image = Image			// "Image" defines the URL/path of the PREVIEW image
	this.Width = Width			// "Width" defines the width of the PREVIEW image
	this.Height = Height		// "Height" defines the height of the PREVIEW image
	}
	
// Create the photo Gallery array with names of Preview photos, widths and heights

	Gallery = new Array(22)
	Gallery[0] = new Photo("Images/Group/Preview/Group_0001P.jpg",442,251)
	Gallery[1] = new Photo("Images/Group/Preview/Group_0002P.jpg",386,287)
	Gallery[2] = new Photo("Images/Group/Preview/Group_0003P.jpg",376,296)
	Gallery[3] = new Photo("Images/Group/Preview/Group_0004P.jpg",461,240)
	Gallery[4] = new Photo("Images/Group/Preview/Group_0005P.jpg",349,317)
	Gallery[5] = new Photo("Images/Group/Preview/Group_0006P.jpg",375,295)
	Gallery[6] = new Photo("Images/Group/Preview/Group_0007P.jpg",375,295)
	Gallery[7] = new Photo("Images/Group/Preview/Group_0008P.jpg",500,190)
	Gallery[8] = new Photo("Images/Group/Preview/Group_0009P.jpg",376,294)
	Gallery[9] = new Photo("Images/Group/Preview/Group_0010P.jpg",500,156)
	Gallery[10] = new Photo("Images/Group/Preview/Group_0011P.jpg",375,295)
	Gallery[11] = new Photo("Images/Group/Preview/Group_0012P.jpg",394,282)
	Gallery[12] = new Photo("Images/Group/Preview/Group_0013P.jpg",372,298)
	Gallery[13] = new Photo("Images/Group/Preview/Group_0014P.jpg",453,245)
	Gallery[14] = new Photo("Images/Group/Preview/Group_0015P.jpg",372,298)
	Gallery[15] = new Photo("Images/Group/Preview/Group_0016P.jpg",372,298)
	

// Define the Group Gallery Image Array

	var imgArray = new Array()

	imgArray[0] = new Image(Gallery[0].Width,Gallery[0].Height) 	// define the image's width & height
	imgArray[1] = new Image(Gallery[1].Width,Gallery[1].Height)  
	imgArray[2] = new Image(Gallery[2].Width,Gallery[2].Height)
	imgArray[3] = new Image(Gallery[3].Width,Gallery[3].Height)
	imgArray[4] = new Image(Gallery[4].Width,Gallery[4].Height)
	imgArray[5] = new Image(Gallery[5].Width,Gallery[5].Height)
	imgArray[6] = new Image(Gallery[6].Width,Gallery[6].Height)
	imgArray[7] = new Image(Gallery[7].Width,Gallery[7].Height)
	imgArray[8] = new Image(Gallery[8].Width,Gallery[8].Height)
	imgArray[9] = new Image(Gallery[9].Width,Gallery[9].Height)
	imgArray[10] = new Image(Gallery[10].Width,Gallery[10].Height)
	imgArray[11] = new Image(Gallery[11].Width,Gallery[11].Height)
	imgArray[12] = new Image(Gallery[12].Width,Gallery[12].Height)
	imgArray[13] = new Image(Gallery[13].Width,Gallery[13].Height)
	imgArray[14] = new Image(Gallery[14].Width,Gallery[14].Height)
	imgArray[15] = new Image(Gallery[15].Width,Gallery[15].Height)
	

		
	imgArray[0].src = Gallery[0].Image		// load the image from the Gallery Array
	imgArray[1].src = Gallery[1].Image
	imgArray[2].src = Gallery[2].Image
	imgArray[3].src = Gallery[3].Image
	imgArray[4].src = Gallery[4].Image
	imgArray[5].src = Gallery[5].Image
	imgArray[6].src = Gallery[6].Image
	imgArray[7].src = Gallery[7].Image
	imgArray[8].src = Gallery[8].Image
	imgArray[9].src = Gallery[9].Image
	imgArray[10].src = Gallery[10].Image
	imgArray[11].src = Gallery[11].Image
	imgArray[12].src = Gallery[12].Image
	imgArray[13].src = Gallery[13].Image
	imgArray[14].src = Gallery[14].Image
	imgArray[15].src = Gallery[15].Image