var viewwin;

function view(url) {
	
	params = "width=400,height=580,resizable=0,status=0,scrollbars=0,toolbar=0,location=0,directories=0,menubar=0"

	if (viewwin == null || viewwin.closed) {
		viewwin = window.open(url, "viewwin", params);
	}
	else {
		viewwin.location.href = url;
	}

	viewwin.focus();
}