function write_message(culture, observer, subject) {
	var h = 500;
	var w = 640;
	var top = (screen.availHeight-h)/2;
	var left = (screen.availWidth-w)/2;
	var url = "Enquiry.aspx?Culture="+culture+"&Observer="+observer+"&subject="+escape(subject);
	var w = window.open(url, "ebmessage", "height="+h+",width="+w+",location=no,menubar=no,left="+left+",top="+top+",screenX="+left+",screenY="+top+",resizable");
	w.focus();
}