function toggle(id)
{
	var allIDs = Array('Proj01','Proj02','Proj03','Proj05','Proj06','Proj07','Proj08','Proj09','Proj10','Proj11','Proj12');
	for(var i = 0; i < allIDs.length; i++) {
		// hide all images
		document.getElementById('i' + allIDs[i]).style.display = 'none';
		// hide all descriptions
		document.getElementById('d' + allIDs[i]).style.display = 'none';
		// turn off border for all thumbnails
		document.getElementById('t' + allIDs[i]).classname = '';
	}
	
	document.getElementById('i' + id).style.display = '';				// show selected layer
	document.getElementById('d' + id).style.display = '';				// show selected layer
	document.getElementById('t' + id).classname = 'selProj';		// give border to thumb
}