function nextImage() {
	if (currImage < (boatImages.length - 1)) {
		currImage++;
	}
	else {
		currImage = 1;
	}
	
	document["imgBoat"].src = boatImages[currImage];
}

function prevImage() {
	if (currImage > 1) {
		currImage--;
	}
	else {
		currImage = (boatImages.length - 1);
	}
	
	document["imgBoat"].src = boatImages[currImage];
}

function windowOpener(strDestination, iWidth, iHeight) {
	var iPosLeft = 0;
	var iPosTop = 0;
	
	iPosLeft = (screen.width - iWidth) / 2;
	iPosTop = (screen.height - iHeight) / 2;
	
	objSubWindow = open(strDestination,'popup','toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=no,width=' + iWidth + ',height=' + iHeight + ',left=' + iPosLeft + ',top=' + iPosTop + '');
	objSubWindow.focus();
}