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