var xmlHttp

function getEventAnnouncement(date)
{
	xmlHttp=GetXmlHttpObject();
	if(xmlHttp == null){
		alert("Your browser doesn't support Ajax!");
		return;
	}
	var url = "CalendarDB.jsp";
	url = url+"?q="+date;
	xmlHttp.onreadystatechange=stateChanged;
	xmlHttp.open("GET", url, true);
	xmlHttp.send(null);
}

function stateChanged()
{
	if(xmlHttp.readyState == 4)
	{
		document.getElementById('Layer1').innerHTML=xmlHttp.responseText;
	}
}

function GetXmlHttpObject()
{
	var xmlHttp = null;
	try{
		xmlHttp=new XMLHttpRequest();//Firefox, Opera 8.0+, Safari
	}
	catch(e)
	{
		//Internet Explorer
		try{
			xmlHttp = new ActiveXObject("Msxml2.XMLHTTP");
		}
		catch(e){
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return xmlHttp;
}