var crntIndex = -1;

function showImage(index)
{
	if (crntIndex == -1){
		// Hide all
		if (document.getElementById('img0'))
			document.getElementById('img0').style.display = 'none';
		if (document.getElementById('img1'))
			document.getElementById('img1').style.display = 'none';
		if (document.getElementById('img2'))
			document.getElementById('img2').style.display = 'none';

		// Show selected
		document.getElementById('img'+index).style.display = '';
		crntIndex = index;
	}
	else if (crntIndex != index && document.getElementById("img"+index)){
		document.getElementById("img"+crntIndex).style.display = 'none';
		document.getElementById("img"+index).style.display = '';
		crntIndex = index;
	}
}