in base al pulsante che premi puoi variare l'action di una sola form:
codice:
<script language="javasctipt" type="text\javascript">
<!--
function setAction(destination){
document.form.myform.action=destination;
document.form.myform.subit();
}
//-->
</script>
<form name="myform" method="post">
<input type="button" value="Vai qui" onClick="setAction("pagina1.asp");"> <input type="button" value="ELIMINA" onClick="setAction("delete.asp");"> 
</form>