// JavaScript Document
var imageArray = [
	["images/eva1_sq.jpg","Oil and vinegar carafe - Eva Solo"],	
	["images/eva3_sq.jpg","Grill - Eva Solo"],
	["images/aalto1_sq.jpg","Aalto vase - Iittala"],
	["images/eden2_sq.jpg","Salad servers - Eden, Live"],
	["images/authentics_sq.jpg","Tablestories platter - Authentics"],
	["images/aalto2_sq.jpg","Aalto vase - Iittala"],
	["images/stelton_sq.jpg","Cylinda Line - Stelton"],
	["images/eden_sq.jpg","Salad bowl - Eden, Live"],
	["images/eva4_sq.jpg","Pot holders - Eva Solo"],
	["images/stelton3_sq.jpg","Ships Lamp - Stelton"],
	["images/eva5_sq.jpg","Fruit knife - Eva Solo"],
	["images/eva2_sq.jpg","Garlic press - Eva Solo"],
	["images/stelton2_sq.jpg","Vacuum jug - Stelton"],
	["images/gj1_sq.jpg","Season candleholder - Georg Jensen"],
	["images/gj2_sq.jpg","Bloom bowls - Georg Jensen"],
	["images/lexon1_sq.jpg","Tykho radio - Lexon"],
	["images/lexon2_sq.jpg","Mini Dolmen radio - Lexon"],
	["images/lexon3_sq.jpg","Boxit clock - Lexon"]];

var selectedImages = [["",""],["",""],["",""],["",""]];
var preloadDone = false;

function handlePreload() {
	// create object
     imageObj = new Image();
	 for(i=0; i< imageArray.length; i++) 
     {
          imageObj.src=imageArray[i][0];
     }
	preloadDone = true;

}

function checkDone(imageName) {
	
	found = false;
	
	for(i=0; i < selectedImages.length; i++) {
		if (selectedImages[i][0] == imageName)
			found = true;
	}

	return found;
}


function randomizeImages() {
	
	var theIndex;
	var i=0;
	
	if(!preloadDone)
		handlePreload();
		
	// create an array of 4 randomized images...
	do {
		theIndex = Math.floor(Math.random() * imageArray.length);
		theImage = imageArray[theIndex][0];
		if (checkDone(theImage) == false) {		
			//selectedImages.push(theImage); push() doesn't work in IE5 Mac!!!
			selectedImages[i][0] = theImage;
			selectedImages[i][1] = imageArray[theIndex][1]; // title text
			i++;
			if (i == 4)
				break;
		}
	} while (true)
	blankIndex = Math.floor(Math.random() * 3);
	selectedImages[blankIndex][0] = "images/im_tl.jpg";
	selectedImages[blankIndex][1] = "";
	
	document.images.im_tl.src = selectedImages[0][0];
	document.images.im_tl.title = selectedImages[0][1];
	document.images.im_tr.src = selectedImages[1][0];
	document.images.im_tr.title = selectedImages[1][1];
	document.images.im_bl.src = selectedImages[2][0];
	document.images.im_bl.title = selectedImages[2][1];
	document.images.im_br.src = selectedImages[3][0];
	document.images.im_br.title = selectedImages[3][1];
}