function popup(url, id, w, h, x, y, resize, scrollbar, menubar, status, toolbar) {
  var opt = '';
  var noDef;

  if (w != noDef) {
	opt += 'width=' + w + ',';
	if (x == noDef)
		x = (screen.width - w) / 2;
	opt += 'left=' + x  + ',';
  }

  if (h != noDef) {
	opt += 'height=' + h + ',';
	if (y == noDef)
		y = (screen.height - h) / 2;
	opt += 'top=' + y + ',';
  }

  if (resize != noDef)		opt += 'resizable=no,';
  if (scrollbar != noDef)	opt += 'scrollbars=' + scrollbar + ',';
  if (menubar != noDef)	opt += 'menubar=' + menubar + ',';
  if (status != noDef)		opt += 'status=' + status + ',';
  if (toolbar != noDef)	opt += 'toolbar=' + toolbar + ',';

  var win = window.open(url, id, opt);
  if (win)
	win.focus();
  else
	alert("Failed to open window: " + url + "\nID = " + id + "\nOpts = \n" + opt);

}

function play(cd_title, track) {
 popup('play.php?cd=' + cd_title + '&t=' + track + '#' + track, 'jcplayer', 400, 540);
}

function msgboard(id) {
 popup('http://www.crawfordmusic.net/_mb/viewforum.php?f=' + id, 'jctalk' + id);
}

function genpop(img, w, h) {
 popup('popup.php?img=' + img, 'jcpopup', w, h);
}

function rotten(s) {
  var map = "!@#%^*()~- +=_XxVvQ7qUuIi3C}cKkNnYy2MmPpHh0Ss:;/?Bb81EeGgFfJ4jOoRr5DdWw6AaL{lTtZz.9[|],`";
  var ml = map.length;
  var out = "";
  for (n = 0; n < s.length; n++) {
    var c = s.charAt(n);
    var p = map.indexOf(c);
    out += p < 0 ? c : map.charAt((p + (ml / 2)) % ml);
  }
  return out;
}