preload('logo','../_images/menu/logo_practice.gif');
preload('logo','../_images/menu/logo_over.gif');

preload('A','../_images/menu/practice_A_on.gif');
preload('A','../_images/menu/practice_A_over.gif');

preload('B','../_images/menu/practice_B_on.gif');
preload('B','../_images/menu/practice_B_over.gif');

preload('C','../_images/menu/practice_C_on.gif');
preload('C','../_images/menu/practice_C_over.gif');

preload('D','../_images/menu/practice_D_on.gif');
preload('D','../_images/menu/practice_D_over.gif');

preload('E','../_images/menu/practice_E_on.gif');
preload('E','../_images/menu/practice_E_over.gif');

preload('F','../_images/menu/practice_F_on.gif');
preload('F','../_images/menu/practice_F_over.gif');