function hidePrefs() {
  unselected('menu_prefs');
  unhilite('prefs_close');
  hideElem('prefs');
}
function showPrefs() {
  if (!isDraggable()) hideAll();
  else raiseWindow('prefs');
  showElem('prefs');
  selected('menu_prefs');
}
function togglePrefs() {
  if (document.getElementById('prefs').style.display!='block') showPrefs();
  else hidePrefs();
}
function initPrefs() {
  defaultPrefs();
  placeElem('prefs');
  if (isDraggable())
    getFile('prefs_menu_drag.html','prefs_top_drag','switchPrefs()');
  else
    getFile('prefs_menu_dock.html','prefs_top_drag','switchPrefs()');
}
function switchPrefs() {
  showPrefsGeneral();
}

// Set defaults for the preference cookies
function defaultPrefs() {
  // General
  if (getCookie('showsats')=='') setCookie('showsats',1);
  if (getCookie('showcolor')=='') setCookie('showcolor',1);
  if (getCookie('showpreview')=='') setCookie('showpreview',1);
  if (getCookie('autohide')=='') setCookie('autohide',1);
  if (getCookie('keyboard')=='') setCookie('keyboard',1);
  // Fields
  if (getCookie('latlon')=='') setCookie('latlon',2);
  if (getCookie('linele')=='') setCookie('linele',2);
  if (getCookie('index')=='') setCookie('index',2);
  if (getCookie('tape')=='') setCookie('tape',2);
  if (getCookie('comments')=='') setCookie('comments',1);
  // Alls
  if (getCookie('ALL_type')=='') setCookie('ALL_type',0);
  if (getCookie('ALL_coverage')=='') setCookie('ALL_coverage',0);
  if (getCookie('ALL_schedule')=='') setCookie('ALL_schedule',0);
  // Collapsed
  if (getCookie('collapsed')=='') setCookie('collapsed',0);
}

// General functions
function showPrefsGeneral() {
  unselected('prefs_fields');
  selected('prefs_general');
  if (isAdmin())
    getFile('prefs_general.php?admin=1','prefs_body','updatePrefsGeneral()');
  else
    getFile('prefs_general.php','prefs_body','updatePrefsGeneral()');
}
function updatePrefsGeneral() {
  setOption('RAD_sats',getCookie('showsats'),3);
  setOption('RAD_color',getCookie('showcolor'),3);
  setOption('RAD_preview',getCookie('showpreview'),2);
//  setOption('RAD_tz',getCookie('showtz'),2);
  setOption('RAD_autohide',getCookie('autohide'),2);
  setOption('RAD_kbd',getCookie('keyboard'),2);
//  setOption('RAD_draggable',getCookie('draggable'),2);
  getTZ();
  fixShadow();
}

// Results functions
function showPrefsFields() {
  unselected('prefs_general');
  selected('prefs_fields');
  getFile('prefs_fields.html','prefs_body','updatePrefsFields()');
}
function updatePrefsFields() {
  setOption('RAD_latlon',getCookie('latlon'),2);
  setOption('RAD_linele',getCookie('linele'),2);
  setOption('RAD_index',getCookie('index'),2);
  setOption('RAD_tape',getCookie('tape'),2);
  setOption('RAD_comments',getCookie('comments'),3);
  fixShadow();
}

// Set radio button-like elements to cookie values
//  Must be ID'd: <prefix><number>, ie: <RAD_color><1>
//  Cookies must have numeric values
//  Blank cookies will default to a value of 1
function setOption(prefix,value,count) {
  if (value==null || value=='') { value=1; }
  for (i=1; i<=count; i++) { unselected(prefix+i); }
  for (i=1; i<=count; i++) {
    if (i==value) { selected(prefix+i); }
  }
}

function getFieldsPrefs() {
  var vars=new Array();
  if (getCookie('latlon')==1) { vars.push('d_latlon=1'); }
  else { vars.push('d_latlon=0'); }
  if (getCookie('linele')==1) { vars.push('d_linele=1'); }
  else { vars.push('d_linele=0'); }
  if (getCookie('index')==1) { vars.push('d_index=1'); }
  else { vars.push('d_index=0'); }
  if (getCookie('tape')==1) { vars.push('d_tape=1'); }
  else { vars.push('d_tape=0'); }

  if (getCookie('comments')==2) { vars.push('d_comments=2'); }
  else if (getCookie('comments')==3) { vars.push('d_comments=0'); }
  else { vars.push('d_comments=1'); }

  return(vars);
}

// Deal with 'all' option
function updatePrefsAlls() {
  if (getCookie('ALL_type')==0)
    document.getElementById('CHK_type').checked=0;
  else
    document.getElementById('CHK_type').checked=1;
  if (getCookie('ALL_coverage')==0)
    document.getElementById('CHK_coverage').checked=0;
  else
    document.getElementById('CHK_coverage').checked=1;
  if (getCookie('ALL_schedule')==0)
    document.getElementById('CHK_schedule').checked=0;
  else
    document.getElementById('CHK_schedule').checked=1;
}

// Deal with 'collapsed' option
function updatePrefsCollapsed() {
  if (getCookie('collapsed')==0)
    document.getElementById('CHK_collapsed').checked=0;
  else
    document.getElementById('CHK_collapsed').checked=1;
}

function getCollapsedPref() {
  var theElem=document.getElementById('CHK_collapsed');
  if (theElem==null) return 0;
  else return theElem.checked?1:0;
}