def Button(val=None):
try:
if val != None:
if isinstance(val, int): but = int(val)
else: but = gv.getindex(val, butmenu.buttons, True)
if but > -1:
butmenu.nav(but, 4)
return True
return False
except:
return False
def main():
"""Pone en marcha el programa"""
menu.nav()