var message = 'Please fill in all mandatory fields ! \n';

var bustcachevar=1; //bust potential caching of external pages after initial request? (1=yes, 0=no)
var bustcacheparameter="";

function createRequestObject(){
	try	{
		xmlhttp = window.XMLHttpRequest ? new XMLHttpRequest() : new ActiveXObject("Microsoft.XMLHTTP");
	}	catch(e)	{
		alert('Sorry, but your browser doesn\'t support XMLHttpRequest.');
	};
	return xmlhttp;
};

function ajaxpage(url, containerid, requesttype){
	var page_request = createRequestObject();
	if (requesttype=='get'){
		if (bustcachevar) bustcacheparameter=(url.indexOf("?")!=-1)? "&"+new Date().getTime() : "?"+new Date().getTime()
		page_request.open('GET', url+bustcacheparameter, true)
		page_request.send(null)
	} else if (requesttype=='post') {
		page_request.open('POST', url, true);
		page_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
		page_request.setRequestHeader("Content-length", poststr.length);
		page_request.setRequestHeader("Connection", "close");
		page_request.send(poststr);
	};

	page_request.onreadystatechange=function(){
		loadpage(page_request, containerid)
	}
}

function loadpage(page_request, containerid){
	if (page_request.readyState == 4 && (page_request.status==200 || window.location.href.indexOf("http")==-1)) {
		document.getElementById(containerid).innerHTML=page_request.responseText;
	};
}

function submitBooking() {
	re = /([0-9a-zA-Z\.-_]+)@([0-9a-zA-Z\.-_]+)/;
	if (document.frm.username.value=='' || document.frm.email.value=='') {
		alert("Fill in name and email.");
	} else if (document.frm.email.value.length!=0 && document.frm.email.value.match(re)==null){
		alert("Invalid email address.");
	} else {
		var poststr = "&username="+ encodeURIComponent( document.frm.username.value ) + "&email=" + encodeURIComponent( document.frm.email.value );
		ajaxpage('/newsletter/newsletterform.php?ac=save'+poststr,'divNewsletter','get');
	};
};

loadCalendar = '<div id="divNewsletter"></div><script language="javascript">	ajaxpage("/newsletter/newsletterform.php","divNewsletter","get");</script>';
document.writeln(loadCalendar);