function sw(n) {
 for (i = 0; i < products_count; i++) {
	 document.getElementById('tbl-product-' + i).style.display = i == n ? '' : 'none';
		document.getElementById('a-product-' + i).className = 
		 i == n ? 
			 (n == 0 ? 'leftpressed' : (i == products_count-1 ? 'rightpressed' : 'centerpressed')) :
				(i == 0 ? 'left' : (i == products_count-1 ? 'right' : ''));
	}	
	document.getElementById('td-subscription').innerHTML = subscriptions[n];
	
	return false;	
}