function switchCard(prefix, id)
{
	var card;
	var tab;
        
        var sw = document.getElementById(prefix + "switchedCard");
        if (!sw) return;
        var switchedCard = sw.value;

	if (switchedCard != 0) {
		card = document.getElementById(prefix + "card" + switchedCard);
		tab = document.getElementById(prefix + "tab" + switchedCard);
		
		tab.className = prefix +  "tab" + "ON";
		
		card.style.display = 'none';
	}
	switchedCard = id;
	

	if (switchedCard != 0) {
		card = document.getElementById(prefix + "card" + switchedCard);
		tab = document.getElementById(prefix + "tab" + switchedCard);
		card.style.display = 'block';
		tab.className = prefix +  "tab" + "OFF";
		
	}								
	
	sw.value = id;
}