/******************
 Trung Tuong Nguyen
 ******************/
var	nRollOverFlag = 0;
var	nTotalImages = 0;
// alert(navigator.appName);
// alert(navigator.appVersion);
if (((navigator.appName == "Netscape") && (parseInt(navigator.appVersion) >= 3 ))
	|| ((navigator.appName == "Microsoft Internet Explorer") && (parseInt(navigator.appVersion) >= 4 ))) {
	nRollOverFlag = 1;
	var ImageName = new Array();
	var ImageArray = new Array();
}
function AddImageCache(sImageName, sImageURL) {
	// returns -2 if nRollOverFlag is false
	// returns 0 else...
	if (!nRollOverFlag) return(-2);
	ImageName[nTotalImages] = sImageName;
	ImageArray[nTotalImages] = new Image();
	ImageArray[nTotalImages].src = sImageURL;
	nTotalImages += 1;
	return(0);
}
function FindImage(sImageName) {
	// returns -2 if nRollOverFlag is false
	// returns -1 if not found
	// returns index to imagename
	if (!nRollOverFlag) return(-2);
	var nTemp = 0;
	var nFound = -1;
	while (nTemp < nTotalImages) {
		if (ImageName[nTemp] == sImageName) {
			nFound = nTemp;
			break;
		}
		nTemp += 1;
	}
	return(nFound);
}
function swapimage(xobject, sImageName) {
	if (!nRollOverFlag) return(-2);
	var nImageIndex = -1;
	nImageIndex = FindImage(sImageName);
	if (nImageIndex >= 0) {
		document.images[xobject].src = ImageArray[nImageIndex].src;
	}
	return true;
}
function swapimage2(xobject, sImageName, sMsg) {
	window.status = sMsg;
	swapimage(xobject, sImageName);
	return true;
}