if (navigator.userAgent.indexOf("Mozilla/4.0") != -1) {
	version = 4;
} else if (navigator.userAgent.indexOf("Mozilla/3.0") != -1) {
	version = 3;
} else if (navigator.userAgent.indexOf("Mozilla/2.0") != -1) {
	version = 2;
} else if (navigator.userAgent.indexOf("MSIE") != -1) {
	version = 1;
} else {
	version = 0;
}

var zoomwindow;

function popup (url,param) {

	var features;
	features = "toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars="+param+",resizable=0,fullscreen=0";
	if (zoomwindow != null) {
		if (!zoomwindow.closed)
			zoomwindow.close();
	}
	zoomwindow = window.open(url,"ZOOMWINDOW",features);
	if (version == 3 || version == 4) {
		zoomwindow.focus();
	}
}