function discussion_setup() {
			if ($('discussioncomment').value == comment_teaser) {
				$('discussioncomment').value = '';
			}
		}

		function discussion_leave() {
			if ($('discussioncomment').value == '') {
				$('discussioncomment').value = comment_teaser;
			}
		}

		function discussion_submit_comment() {
			comment = $('discussioncomment').value;
			username = $('discussionname').value;
			useremail = $('discussionemail').value;
			userurl = $('discussionurl').value;
			if (comment != comment_teaser  &&  comment != ''  &&  username != ''  &&  useremail != '') {			
				new Request.HTML({
					url: 'store_comment.php',
					method: 'post',
					data: 'topic='+topic+'&name='+username+'&email='+useremail+'&url='+userurl+'&comment='+comment,
					update: 'discussionthread',
					evalScripts: true,
					onComplete: function(){
						$('discussioncomment').value = comment_teaser;
						$('discussionerror').set('html','<span style="color:#225522;">Your comment has been saved!</span>');
					}
				}).send();
			} else {
				if (comment == comment_teaser  ||  comment == '') {
					$('discussionerror').set('html','Please enter a comment.');
				}
				if (username == '') {
					$('discussionerror').set('html','Please enter your name.');
				}
				if (useremail == '') {
					$('discussionerror').set('html','Please enter your email address.');
				}
			}
		}

		function reload_comments() {
			new Request.HTML({
				url: 'retrieve_comments.php',
				method: 'post',
				data: 'topic='+topic,
				update: 'discussionthread',
				evalScripts: true,
				onComplete: function(){
					t = setTimeout('reload_comments',15*60*1000);
				}
			}).send();
		}