function joi_preload_home(){
  joi_register('pohlad_lh','obrazy/volba_pohlad_01.gif','obrazy/volba_pohlad_over_01.gif');
  joi_register('pohlad_ph','obrazy/volba_pohlad_03.gif','obrazy/volba_pohlad_over_03.gif');
  joi_register('pohlad_ld','obrazy/volba_pohlad_05.gif','obrazy/volba_pohlad_over_05.gif');
  joi_register('pohlad_pd','obrazy/volba_pohlad_07.gif','obrazy/volba_pohlad_over_07.gif');
  joi_register('view_01','gallery/view_01.jpg');
  joi_register('view_02','gallery/view_02.jpg');
  joi_register('view_03','gallery/view_03.jpg');
  joi_register('view_04','gallery/view_04.jpg');
  joi_register('view_in','gallery/view_in.jpg');
  joi_setOver('pohlad_pd','');
  joi_lock('pohlad_pd');
}
function joi_clear_view(){
  joi_unlock('pohlad_lh');joi_setNormal('pohlad_lh','');
  joi_unlock('pohlad_ph');joi_setNormal('pohlad_ph','');
  joi_unlock('pohlad_ld');joi_setNormal('pohlad_ld','');
  joi_unlock('pohlad_pd');joi_setNormal('pohlad_pd','');
}
function joi_view01(){
  joi_clear_view();
  joi_setOver('pohlad_ld','');
  joi_lock('pohlad_ld');
  joi_setLoadImgToId('view_01','view_main');
}
function joi_view04(){
  joi_clear_view();
  joi_setOver('pohlad_pd','');
  joi_lock('pohlad_pd');
  joi_setLoadImgToId('view_04','view_main');
}
function joi_view03(){
  joi_clear_view();
  joi_setOver('pohlad_lh','');
  joi_lock('pohlad_lh');
  joi_setLoadImgToId('view_03','view_main');
}
function joi_view02(){
  joi_clear_view();
  joi_setOver('pohlad_ph','');
  joi_lock('pohlad_ph');
  joi_setLoadImgToId('view_02','view_main');
}
function joi_viewIn(){
  joi_clear_view();
  joi_setLoadImgToId('view_in','view_main');
}