function addLink(inter)
{
	var scheme = document.paragraphform.favourite.value;
	var urly = "science/classlist.php";

	if (XMLHttpRequestObject) {
		XMLHttpRequestObject.open("POST", urly);
		XMLHttpRequestObject.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');

		XMLHttpRequestObject.onreadystatechange = function()
		{
			if (XMLHttpRequestObject.readyState == 4 &&
				XMLHttpRequestObject.status == 200) {

				var newstuff = document.getElementById('secondselect');
				var newstuff2 = document.getElementById('firstselect');

				if (scheme == '') {
					newstuff.innerHTML = "";
					newstuff2.style.display = "none";
				} else {
				newstuff2.style.display = "inline";
				newstuff.innerHTML = "<select name='questionselect' id='changeclass'></select>";
				var xmlDocument = XMLHttpRequestObject.responseXML;
				options = xmlDocument.getElementsByTagName("option");
				listOptions();
				}
			}
		}
		XMLHttpRequestObject.send("type=" + scheme);
	}
}

function listOptions()
{
	var loopIndex;
	var selectControl = document.getElementById('changeclass');

	for (loopIndex = 0; loopIndex < options.length; loopIndex++ )
	{
		selectControl.options[loopIndex] = new Option(options[loopIndex].firstChild.nodeValue, options[loopIndex].attributes.getNamedItem('value').nodeValue); // options[loopIndex].firstChild.data
	}
}