
<script>
function entrada() {
if(document.form.select.value=="action1") {
document.form.action="php1.php"
document.form.method="post"
document.form.target="_top"
}
if(document.form.select.value=="action2") {
document.form.action="php2.php"
document.form.method="post"
document.form.target="_top"
}
if(document.form.select.value=="action3") {
document.form.action="php3.php"
document.form.method="post"
document.form.target="_top"
}
}
</script>
<form name=form onSubmit="return entrada()">
<input type=text name=campotal>
<select name=select size=1>
<option>Escolha</option>
<option value=action1>um</option>
<option value=action2>dois</option>
<option value=action3>três</option>
<input type=submit>
</form>
mesmo assim obrigado pela resposta,