<!--//
	//initialise global variables
	var url;

	function opn(url){	// child window
		if (parseInt(navigator.appVersion) >= 4){
			window.open(url,"dataWindow","width=800,height=670,toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,copyhistory=no,resizable=no");
		}else{
			alert("Your browser is not compatable.\n\nThis page requires either:-\n * Netscape Communicator version 4 or greater\n * Internet Explorer version 4 or greater\n\nPress OK to return to the home page.");
		}
		return false;
	}
// -->