/**
 * toggle FAQ Items
 *
 * @param id 		the id of the FAQ item to hide or show
 * @param single	true to show only one item at a time, false the open as many as you want
 */
function tx_irfaq_toggleFaq(id, single, hash) {

	if (single) {
		// show only one Q+A at a time
		toggleAll(false, hash);
		tx_irfaq_showHideFaq(id, true, hash);
	}
	else {
		// open as many Q+A as you like
		var hidden = (document.getElementById('irfaq_a_'+id+'_'+hash).className == 'tx-irfaq-dynans-hidden');
		tx_irfaq_showHideFaq(id, hidden, hash);
	}
}

/**
 * shows or hides a FAQ item at a time depending on the given status
 *
 * @param id 		the id of the FAQ item to hide or show
 * @param show	true to show the item, false to hide it
 */
function tx_irfaq_showHideFaq(id, show, hash) {
	var faq_id = 'irfaq_a_'+id+'_'+hash; //answer
	var pm_id  = 'irfaq_pm_'+id+'_'+hash; // plus/minus icon

	if (show) {
		document.getElementById(faq_id).className = 'tx-irfaq-dynans-visible';
		document.getElementById(pm_id).src = tx_irfaq_pi1_iconMinus;
	}
	else {
		document.getElementById(faq_id).className = 'tx-irfaq-dynans-hidden';
		document.getElementById(pm_id).src = tx_irfaq_pi1_iconPlus;
	}
}

/**
 * shows or hides all FAQ items with one click
 *
 * @param mode	true to show the items, false to hide them
 */
function tx_irfaq_toggleAll(mode, hash, count) {
	for (i = 0; i < count; i++) {
		showHideFaq(i+1, mode, hash);
	}
}