function XHTTPRequest_Product (url, handler) {
//--- Send an HTTP request

	if (window.XMLHttpRequest) {

		productReq = new XMLHttpRequest ();
		productReq.onreadystatechange = handler;
		productReq.open ("GET", url, true);
		productReq.send (null);

    } else if (window.ActiveXObject) {

		productReq = new ActiveXObject ("Microsoft.XMLHTTP");
		if (productReq) {
			productReq.onreadystatechange = handler;
			productReq.open ("GET", url, true);
			productReq.send ();
        } else {
    		productReq=new ActiveXObject("Microsoft.XMLHTTP");
    		productReq.onreadystatechange = handler;
			productReq.open ("GET", url, true);
			productReq.send ();
    	}

    } else {
    	alert("Ajax is not supported");
    }

}

function DeleteSelectedFavProduct () {
//--- Function to delete selected products

	arrFavProducts = document.getElementsByName('chkFavProduct[]');
	arrDelete = new Array();
	for (i = 0; i < arrFavProducts.length; i++) {
		if (arrFavProducts[i].checked) {
			arrDelete.push(arrFavProducts[i].value);
		}
	}
	if(arrDelete.length > 0) {
		if (confirm('Are you sure you want to delete the selected courses?')) {
			XHTTPRequest_Product ("/live/pagebuilder/components/intec/component-course-favourites-xml.php?Delete=" + encodeURIComponent(arrDelete.join(',')) + "&Session_ID=c9d6cafd37592b93edd82fd652a41116", PopulateFavProducts);
		}
	} else {
		alert ('Please select the courses you wish to delete.');
	}

}

function DeleteAllFavProducts () {

	if(!confirm('Are you sure you want to delete all the courses?')) {
		return false;
	}

	XHTTPRequest_Product ("/live/pagebuilder/components/intec/component-course-favourites-xml.php?Delete=all&Session_ID=c9d6cafd37592b93edd82fd652a41116", PopulateFavProducts);

}

function AddFavProduct (ProductCode) {
//--- Function to delete all products

	XHTTPRequest_Product ("/live/pagebuilder/components/intec/component-course-favourites-xml.php?Add&ProductCode=" + ProductCode + "&Session_ID=c9d6cafd37592b93edd82fd652a41116", PopulateFavProducts);
	scroll(0,0);

}

function RefreshFavProducts () {
//--- Function to load all the favourite products for this user

	XHTTPRequest_Product ("/live/pagebuilder/components/intec/component-course-favourites-xml.php?Load&Session_ID=c9d6cafd37592b93edd82fd652a41116", PopulateFavProducts);

}

function PopulateFavProducts () {
//--- Function to populate all the favourite products for this user

	if (productReq.readyState == 4) {
		switch (productReq.status) {
			case 200:	//--- Display response text
						if (document.getElementById) { //Everyone else
							var favProducts = document.getElementById("favProducts");
							var favProductsLinks = document.getElementById("favProductsLinks");
							var favProductsEnrollmentLinks = document.getElementById("favProductsEnrollmentLinks");
						}
						else if (document.all) { //IE method
							var favProducts = document.all['favProducts']; 
							var favProductsLinks = document.all['favProductsLinks']; 
							var favProductsEnrollmentLinks = document.all['favProductsEnrollmentLinks']; 
						} else {
							alert('Unknown browser. You may be running a browser that does not support DOM.');
							return false;
						}
						var tagLinks = '';
						if (productReq.responseXML.getElementsByTagName ("products")) {
							var tagList = productReq.responseXML.getElementsByTagName ("products")[0].getElementsByTagName ("product");
							if (tagList.length) {
								tagLinks = '<font class="H2">Favourites</font><br /><br /><table>';
								for (i = 0; i < tagList.length; i++) {
									tagLinks += "<tr><td><input type=\"checkbox\" name=\"chkFavProduct[]\" value=\"" + 
										tagList[i].getElementsByTagName ("productcode")[0].firstChild.nodeValue.toString () + "\" checked=\"checked\"/></td><td>" + (tagList[i].getElementsByTagName ("showlink")[0].firstChild.nodeValue.toString () == 1 ? "<a href=\"/courses/" + 
										tagList[i].getElementsByTagName ("productcode")[0].firstChild.nodeValue.toString () + "/" + tagList[i].getElementsByTagName ("seoname")[0].firstChild.nodeValue.toString () + "/\">" : "Combo: ") +
										tagList[i].getElementsByTagName ("productname")[0].firstChild.nodeValue.toString () + (tagList[i].getElementsByTagName ("showlink")[0].firstChild.nodeValue.toString () == 1 ? "</a>" : "") + "</td></tr>";
								}
								tagLinks += '</table>';
								favProducts.innerHTML = tagLinks;
								favProductsLinks.style.display = '';
								favProductsEnrollmentLinks.style.display = '';
							} else {
								favProducts.innerHTML = "<font class=\"H2\">Haven't used 'My Favourites' before?</font><br /><br /><b>Here's how it works:</b><ul><li>Start by searching the site for <a href=\"/live/content.php?Item_ID=220\"><b>the right course for you</b></a><br /><br /></li><li>Click on the <b>Add to Favourites</b> button on the course information page<br /><br /></li><li>Click on the <b>Enrol Now</b> link to enrol online<br /><br /></li><li>Click here for more <a href=\"/live/tips.php?Item_ID=212\" target=\"_blank\"><b>Tips on Using This Site</b></li></ul>"; 
								favProductsLinks.style.display = 'none';
								favProductsEnrollmentLinks.style.display = 'none';
							}
						} else {
							favProducts.innerHTML = "<font class=\"H2\">An error occured!</font><br /><br />We could not download your list of favourites. Please <a href=\"#\" onclick=\"RefreshFavProducts ()\">try again</a>."; 
							favProductsLinks.style.display = 'none';
							favProductsEnrollmentLinks.style.display = 'none';							
						} // end if
						break;
			default:	document.getElementById ('favProducts').innerHTML = "Could not download your list of favourites. <a href=\"#\" onclick=\"RefreshFavProducts ()\">Try again</a>."; 
						break;
		}
	}
}

function CompareProducts () {

	form = document.forms['FavProductsForm'];
	
	arrFavProducts = document.getElementsByName('chkFavProduct[]');
	arrSelect = new Array();
	for (i = 0; i < arrFavProducts.length; i++) {
		if (arrFavProducts[i].checked) {
			arrSelect.push(arrFavProducts[i].value);
		}
	}
	if (arrSelect.length > 0) {
		if (arrSelect.length > 4) {
			alert ('Only 4 courses can be compared at one time. Please select/deselect courses from your favourites and try again.');
		} else {
			form.action = '/live/compare.php?Session_ID=c9d6cafd37592b93edd82fd652a41116';
			form.target = '_blank';
			form.submit();
		}
	} else {
		alert('Please select up to courses you wish to compare.');
	}

}

function EnquireProducts () {

	form = document.forms['FavProductsForm'];
	
	arrFavProducts = document.getElementsByName('chkFavProduct[]');
	arrEnquiry = new Array();
	for (i = 0; i < arrFavProducts.length; i++) {
		if (arrFavProducts[i].checked) {
			arrEnquiry.push(arrFavProducts[i].value);
		}
	}
	if (arrEnquiry.length > 0) {
		form.action= '/live/content.php?Item_ID=29&Session_ID=c9d6cafd37592b93edd82fd652a41116';
		form.submit();
	} else {
		alert('Please select the courses you wish to enquire about.');
	}

}

function EnrollProducts() {

	form = document.forms['FavProductsForm'];
	
	arrFavProducts = document.getElementsByName('chkFavProduct[]');
	arrEnrol = new Array();
	for (i = 0; i < arrFavProducts.length; i++) {
		if (arrFavProducts[i].checked) {
			arrEnrol.push(arrFavProducts[i].value);
		}
	}
	if (arrEnrol.length > 0) {
		form.action= '/live/content.php?Item_ID=220&Session_ID=c9d6cafd37592b93edd82fd652a41116';
		form.submit();
	} else {
		alert('Please select the courses you wish to enrol for.');
	}

}