function showRoll( who ) {
				
	switch(who)
	{
	case "Sami":
		thisLayer = document.getElementById('viewAll');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSami');
		if ( thisLayer) thisLayer.style.visibility = 'visible';
		thisLayer = document.getElementById('viewSandro');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewChristian');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewBidu');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewHeinz');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
        break;
	case "Sandro":
		thisLayer = document.getElementById('viewAll');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSami');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSandro');
		if ( thisLayer) thisLayer.style.visibility = 'visible';
		thisLayer = document.getElementById('viewChristian');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewBidu');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewHeinz');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
        break;
	case "Christian":
		thisLayer = document.getElementById('viewAll');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSami');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSandro');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewChristian');
		if ( thisLayer) thisLayer.style.visibility = 'visible';
		thisLayer = document.getElementById('viewBidu');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewHeinz');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
        break;
	case "Bidu":
		thisLayer = document.getElementById('viewAll');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSami');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSandro');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewChristian');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewBidu');
		if ( thisLayer) thisLayer.style.visibility = 'visible';
		thisLayer = document.getElementById('viewHeinz');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
        break;
	case "Heinz":
		thisLayer = document.getElementById('viewAll');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSami');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewSandro');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewChristian');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewBidu');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewHeinz');
		if ( thisLayer) thisLayer.style.visibility = 'visible';
        break;
	default:
		thisLayer = document.getElementById('viewAll');
		if ( thisLayer) thisLayer.style.visibility = 'visible';
		thisLayer = document.getElementById('viewSami');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';		
		thisLayer = document.getElementById('viewSandro');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewChristian');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewBidu');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';
		thisLayer = document.getElementById('viewHeinz');
		if ( thisLayer) thisLayer.style.visibility = 'hidden';	
	}
	
}