$("button").click(function(){ $("h1").hide(); }); }); </script> --> <?php require_once '/Model/calculadora.php'; $calculadora = new Calculadora(); $mostra = '0'; $calculadora->setMostra($mostra); // echo "javascript mostra: ".$_POST['var1']; $strOperation = $calculadora->getStrOperation(); // echo "Op: ".$strOperation."      Mostra: ".$mostra."    "; $calculadora->operate($strOperation); ?> <div class='calc1'> <div class='calc2'> <table> <tr> <td colspan='4'> <div id='mostra'> <h2 id='mostraheader'> <?php echo '0'; ?> </h2> </div>