function popupWindow(url,name,width,height,scroll,resize) {
    var popWin;
	var windowName = name;
	var h = height;
	var w = width;
	var winl = (screen.availWidth - w) / 2;
	var wint = (screen.availHeight - h) / 2;
	if (!scroll) scroll = 'no';
	else {
		if (scroll == 0) { scroll = 'no'; }
		else { scroll = 'yes'; }
	}
	if (!resize) resize = 'no';
	else {
		if (resize == 0) { resize = 'no'; }
		else { resize = 'yes'; }
	}

	options = 'height=' + h + ',width=' + w + ',toolbar=no,directories=no,status=no,menubar=no,scrollbars='+scroll+',resizable='+resize+',top=' + wint + ',left=' + winl;
  	popWin = window.open(url, windowName+width+height, options);
	if (popWin) {
	    popWin.focus();
	} else {
		msg = "Your browser may be blocking pop-ups; please enable pop-ups to view this page.";
	    alert(msg);
	}
}