function mostrar(blo) { document.getElementById(blo).style.display='block';}
function ocultar(blo) { document.getElementById(blo).style.display='none'; }
function MM_jumpMenu(targ,selObj,restore){ //v3.0
  eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
  if (restore) selObj.selectedIndex=0;
}