var g_strSelectedThumb = String("01");

function ThumbnailClick(strID) {
	if ( strID != g_strSelectedThumb ) {
		// Hide the old selection
		document.getElementById('thumb'+g_strSelectedThumb).className = 'hidden'
		// Highlight the new selection
		document.getElementById('thumb'+strID).className = 'visible';
		// Update the full size image
		document.getElementById('fullsize').src = 'images/fullsize/' + g_strSection + '_' + strID + '.jpg';
		
		g_strSelectedThumb = strID;
	}
}