Form get e post

[[_Kilckk_]]

se uso questo codice nn funziona

<input type="submit" value="stampa" method="get" onclick="this.form.target='_blank'; this.form.action='scontrino.html';"> 
<input type="submit" value="invia>>" method="post" onclick="this.form.target='_blank'; this.form.action='verifica.asp';">

perchè???

[[_Kilckk_]]

ci sono riuscito:

<input type="submit" value="stampa" onclick="this.form.target='_blank'; this.form.method='get'; this.form.action='pagina1.html';">

<input type="submit" value="Prova" onclick="this.form.target='_blank'; this.form.method='post'; this.form.action='pagina2.html';">