function playsample(track)
{ mapwin=window.open(track,'bertie','width=300,height=200,scrollbars=0,toolbar=0,resizable=1',false);
  mapwin.focus();
}

function reveal(id,show)
{ if (show)
    document.getElementById(id).style.visibility='visible';
  else
    document.getElementById(id).style.visibility='hidden';
}

function postit(form,flag)
{ switch (flag)
  { case 1:
      form.action="utils/unitefpsmailer.php";
      reveal('filebutton',false);
      break;

    case 2:
      form.action="utils/evtmailer.php";
      reveal('filebutton',false);
      break;

    case 7: form.action="utils/fdsignup.php"; break;
    default: return;
  }

  if ((flag==1) || (flag==7))
  { reveal('sendbutton',false);
    reveal('ack',true);
  }

  form.method="post"
  form.submit();
}

function nfour(number)
{ return (number < 1000) ? number + 1900 : number;}

function calcdate()
{ var now = new Date();
  var days = new Array('Sunday','Monday','Tuesday','Wednesday',
    'Thursday','Friday','Saturday');
  var months = new Array('January','February','March','April','May','June',
    'July','August','September','October','November','December');
  var date = ((now.getDate()<10) ? "0" : "")+ now.getDate();
  today =  days[now.getDay()]+" "+now.getDate()+" "+months[now.getMonth()]
    + " " +nfour(now.getYear());
  return today;
}

function launch(form,pg)
{ form.method="get";
  form.action=pg;
  form.submit();
}

function getarticle(form)
{ var i=form.articles.selectedIndex;
  rn=recarray[i];
  form.action="diary.php?rn="+rn;
  form.submit();
}

function getworldnews(form)
{ var i=form.articles.selectedIndex;
  rn=recarray[i];
  form.action="worldnews.php?rn="+rn;
  form.submit();
}

function anonclick()
{ if (document.cuform.anon.checked)
    document.cuform.fromemail.value='anon@noemail.com';
  else
    document.cuform.fromemail.value='';
}

function findpos(object)
{ var x=y=0;
  if (object.offsetParent)
    do
    { x+=object.offsetLeft;
      y+=object.offsetTop;
    } while (object=object.offsetParent);
  return [x,y];
}

function hideballoon(form)
{ document.getElementById('popballoon').style.visibility='hidden';
  document.getElementById('helptext').style.visibility='hidden';
}

function revealaballoon(form,sender,head,text,balloon_source,height)
{ pos=findpos(sender);

  ob=document.getElementById('popballoon');

  ob.src='images/'+balloon_source+'.gif';

  if (ob.style.visibility=='visible')
  { hideballoon(form);
    return;
  }

  var x=pos[0]-ob.width/2-90;
  var y=pos[1]-height;

  ob.style.left=x+'px';
  ob.style.top=y+'px';
  ob.style.visibility='visible';

  obtxt=document.getElementById('helptext');

  obtxt.innerHTML='<h3 class=help>'+head+'</h3>'+text;

  obtxt.style.left=x+20+'px';
  obtxt.style.top=y+15+'px';
  obtxt.style.visibility='visible';

  ob.style.zIndex=10;
  obtxt.style.zIndex=11;
}

function revealballoon(form,sender,head,text)
{ revealaballoon(form,sender,head,text,'popballoon',221);
}

function reveallargeballoon(form,sender,head,text)
{ revealaballoon(form,sender,head,text,'popballoon-large',310);
}

function revealhugeballoon(form,sender,head,text)
{ revealaballoon(form,sender,head,text,'popballoon-huge',460);
}

function revealvastballoon(form,sender,head,text)
{ revealaballoon(form,sender,head,text,'popballoon-vast',700);
}

function popmeeting(url)
{ x=(screen.width-770)/2;
  meetwin=window.open(url,'herbert','width=770,height=600,left='+x+',scrollbars=1,toolbar=0,resizable=1',false);
  meetwin.focus();
}