// pre-cache 'filename' button state images

if (document.images) {
var Nhome_up = new Image(96,26)
Nhome_up.src = "img/nav/home_up.jpg"


var Nhome_over = new Image(96,26)
Nhome_over.src = "img/nav/home_over.jpg"


var Nairstaff_up = new Image(137,26)
Nairstaff_up.src = "img/nav/airstaff_up.jpg"


var Nairstaff_over = new Image(137,26)
Nairstaff_over.src = "img/nav/airstaff_over.jpg"


var Nconcerts_up = new Image(148,26)
Nconcerts_up.src = "img/nav/concerts_up.jpg"


var Nconcerts_over = new Image(148,26)
Nconcerts_over.src = "img/nav/concerts_over.jpg"


var Nmusic_up = new Image(124,26)
Nmusic_up.src = "img/nav/music_up.jpg"


var Nmusic_over = new Image(124,26)
Nmusic_over.src = "img/nav/music_over.jpg"


var Nphotos_up = new Image(136,26)
Nphotos_up.src = "img/nav/photos_up.jpg"


var Nphotos_over = new Image(136,26)
Nphotos_over.src = "img/nav/photos_over.jpg"


var Ncontact_up = new Image(79,26)
Ncontact_up.src = "img/nav/contact_up.jpg"


var Ncontact_over = new Image(79,26)
Ncontact_over.src = "img/nav/contact_over.jpg"


}
// function that displays status bar message

function dm(msgStr) {
  document.returnValue = false;
  if (document.images) { 
     window.status = msgStr;
     document.returnValue = true;
  }
}
// functions that swap images

function di(id,name){
  if (document.images) document.images[id].src=eval(name+".src");
}