function join(id, params, newServiceUrl) {
	var serviceUrl = "http://www.gatherplace.net";
    if (typeof(newServiceUrl)!="undefined") serviceUrl = newServiceUrl;
    var url = serviceUrl+"/join?p="+id+params;
    var x = window.screen.availWidth - 10;
    var y = window.screen.availHeight - 46;
    var win = window.open(url+"&fs=true", "omniviewer", 'width='+x+',height='+y+',top=0,left=0,menubar=0,location=0,toolbar=0,personalbar=0,status=1,scrollbars=1,resizable=1');	//"fullscreen,scrollbars=no");
    if (win==null) {
      //prevented by popup blocker; so let's reuse current window
      window.moveTo(0,0);
      window.resizeTo(x, y);
      document.location.href = url;
    } else {
      win.focus();
    }
  }