/* ----------------------- menu --------------------------- */ 
  function menuActive( eNumber ) {
    document.getElementById('m'+eNumber).className='menu_o';
  }
  
  function menuDeActive( eNumber ) {
    document.getElementById('m'+eNumber).className='menu';
  }
  
  function haMenu() {
    for( i = 1; i < 7; i++ ) {
      menuDeActive( i );
    }
  }
  
  function menuMouseOver( eNumber ) {
    haMenu();
    menuActive( eNumber );
  }
  
  function menuMouseOut( eNumber ) {
    menuDeActive( eNumber );
    if( mActive != 0 )
      menuActive( mActive );
  }
  
/* ----------------------- button --------------------------- */   
  function btnSet( eName ) {
    var sClassName = 'btn_'+eName+'_o';
    document.getElementById('btn_'+eName).className=sClassName;
  }
  
  function btnReset( eName ) {
    var sClassName = 'btn_'+eName;
    document.getElementById('btn_'+eName).className=sClassName;
  }
  
  function btnHideAll( eName ) {
    btnReset('home');
    btnReset('contact');
    btnReset('open');
  }
  
  function btnMouseOver( eName ) {
    btnHideAll();
    btnSet( eName );
  }
  
  function btnMouseOut( eName ) {
    btnReset( eName );
    if( btnActive != 0 )
      btnSet( btnActive );
  }
  
/* ----------------------- foto --------------------------- */
  function moFoto( imgSrc ) {
    document.getElementById('bImg').src=imgSrc;
  }
  
  function goTo( pgId ) {
    if( pgId > 0 && pgId < 7 )
      mActive = pgId;
    if( pgId == 1 || pgId == 7 || pgId == 8 )
      btnActive = 0;
    document.location='page.php?id='+pgId;
  }