function updateCoupon(el) {
	var url    = location.toString();
	parameters = {coupon:$('coupon_bogus').value, ajax:'coupon', method: 'get'};
	ajaxRequest(el, url, parameters, onUpdateCoupon);					
}
function onUpdateCoupon(el, response) {
	try {
		$('coupon_code').value = $('coupon_bogus').value;
		$('total_price_string').update(response.evalJSON().price_string);
		if ($('paypal_form')) { 
			if ($('paypal_form')['amount']) {
				$('paypal_form')['amount'].value = response.evalJSON().price;
			} else if ($('paypal_form')['a3']) {
				$('paypal_form')['a3'].value = response.evalJSON().price;
			}
			if ($('paypal_form')['item_number']) {
				$('paypal_form')['item_number'].value += response.evalJSON().id+',';
				//$('paypal_form')['item_number'].value = $('paypal_form')['item_number'].value.slice(0, -1); //Remove trailing ','
			}
		}
		if ($('coupon_bogus').value) {
			$('enter_coupon_link').update(translations['_COUPON'] + ': ' + $('coupon_bogus').value);
		} else {
			$('enter_coupon_link').update(translations['_CLICKTOENTERDISCOUNTCOUPON']);
		}
		eF_js_showDivPopup('', '', 'coupon_table');
	} catch (e) {alert(e);}
}

function addToCart(el, id, type) {
	var url    = location.toString();
	parameters = {fct:'addToCart', id:id, ajax:'cart', type:type, method: 'get'};
	ajaxRequest(el, url, parameters, onCartOperation, false, false);				
}		
function removeFromCart(el, id, type) {
	var url    = location.toString();
	parameters = {fct:'removeFromCart', ajax:'cart', id:id, type:type, method: 'get'};
	ajaxRequest(el, url, parameters, onCartOperation);				
}		

function removeAllFromCart(el) {
	var url    = location.toString();
	parameters = {fct:'removeAllFromCart', ajax:'cart', method: 'get'};
	ajaxRequest(el, url, parameters, onCartOperation);				
}
function onRemoveAllFromCart(el, response) {
	$('cart').innerHTML = response;
}
function onCartOperation(el, response) {
	var re2         = new RegExp("<!--ajax:cart-->((.*[\n])*)<!--\/ajax:cart-->");	//Does not work with smarty {strip} tags!
    var tableText   = re2.exec(response);

	if (!tableText) {
        var re      = new RegExp("<!--ajax:cart-->((.*[\r\n\u2028\u2029])*)<!--\/ajax:cart-->");	//Does not work with smarty {strip} tags!
        tableText   = re.exec(response);
	}

    $('cart').innerHTML = tableText[1];
	//$('cart').innerHTML = response;
}

function paypalSubmit() {
	$('checkout_form').request();
	return false;
}



//Direction tree functions
function showAll() {
	$$('tr').each(function (tr) 	  {tr.id.match(/subtree/) ? tr.show() : null;});
		$$('table').each(function (table) {table.id.match(/direction_/) ? table.show() : null;});
		$$('img').each(function (img) {!img.hasClassName('visible') ? img.addClassName('visible') : null;});
}
function hideAll() {
	$$('tr').each(function (tr) 	  {tr.id.match(/subtree/) ? tr.hide() : null;});
		//$$('table').each(function (table) {table.id.match(/direction_/) ? table.hide() : null;});
		$$('img').each(function (img) {img.hasClassName('visible') ? img.removeClassName('visible') : null;});
}

function showHideDirections(el, ids, id, mode) {	   
	Element.extend(el);		//IE intialization
	if (mode == 'show') {
		el.up().up().nextSiblings().each(function(s) {s.show()});
		if (ids) {
			ids.split(',').each(function (s) { showHideDirections($('subtree_img'+id), $('subtree_children_'+s) ? $('subtree_children_'+s).innerHTML : '', s, 'show') });
			ids.split(',').each(function (s) { obj = $('direction_'+s); obj ? obj.show() : '';});
		}
		setImageSrc(el, 16, 'navigate_up');
		$('subtree_img'+id) ? $('subtree_img'+id).addClassName('visible') : '';
	} else {
		el.up().up().nextSiblings().each(function(s) {s.hide()});
		if (ids) {
			ids.split(',').each(function (s) { showHideDirections($('subtree_img'+id), $('subtree_children_'+s) ? $('subtree_children_'+s).innerHTML : '', s, 'hide') });
			ids.split(',').each(function (s) { obj = $('direction_'+s); obj ? obj.hide() : ''});
		}
		setImageSrc(el, 16, 'navigate_down.png');
		$('subtree_img'+id) ? $('subtree_img'+id).removeClassName('visible') : '';
	}
}
function showHideCourses(el, course) {
	Element.extend(el);
	if (el.hasClassName('visible')) {
		if (course) {
			course.hide();
		}
		setImageSrc(el, 16, 'navigate_down.png');
		el.removeClassName('visible');
	} else {
		if (course) {
			course.show();
		}
		setImageSrc(el, 16, 'navigate_up');
		el.addClassName('visible');
	}
}
function updateInformation(el, id, type, from_course) {
	Element.extend(el);
	type == 'lesson' ? url = 'ask_information.php?lessons_ID='+id : url = 'ask_information.php?courses_ID='+id;
	if (from_course) {
		url += '&from_course='+from_course;
	}
	el.select('span').each(function (s) {									
		if (s.hasClassName('tooltipSpan') && s.empty()) {
			s.setStyle({height:'50px'}).insert(new Element('span').addClassName('progress').setStyle({margin:'auto',background:'url(\"images/others/progress1.gif\")'}));
			new Ajax.Request(url, {
				method:'get',
				asynchronous:true,
				onSuccess: function (transport) {
					s.setStyle({height:'auto'}).update(transport.responseText);
				}
			});
		}
		});
}
function filterTree(el, url) {
	Element.extend(el);
	//$$('tr.directionEntry').each(function (s) {if(s.innerHTML.stripTags().toLowerCase().match(el.value.toLowerCase())) {s.show()} else {s.hide()}});
	url.match(/\?/) ? url = url+'&' : url = url + '?';
	el.addClassName('loadingImg').setStyle({background:'url(\"images/others/progress1.gif\") center right no-repeat'});
	new Ajax.Request(url+'filter='+el.value, {
		method:'get',
		asynchronous:true,
		onSuccess: function (transport) {
			$('directions_tree').innerHTML = transport.responseText;
			el.removeClassName('loadingImg').setStyle({background:''});
		}
	});
}