$(document).ready(function(){			
			timestamp = 0;			
			updateMsg();
			$("form#chatform").submit(function(){
				$.post("backend-side.php",{							
							message: $("#msg").val(),
							name: $("#author").val(),
							action: "postmsg",
							time: timestamp
						}, function(xml) {
					$("#msg").empty();
					addMessages(xml);
				});
				
				return false;
			});
		});
		function addMessages(xml) {
			if($("status",xml).text() == "2") return;
			timestamp = $("time",xml).text();
			$("message",xml).each(function(id) {
				message = $("message",xml).get(id);
				$("#messagewindow").prepend($(message).text());
			});
		}
		function updateMsg() {
			$.post("backend-side.php",{ 
						time: timestamp 
					}, function(xml) {
				$("#loading").remove();
				addMessages(xml);
			});
			setTimeout('updateMsg()', 4000);
		}