To know the name of the form

[frontline]

Hello is there any way to know the name of the form im in ?
what i mean is say i have button inside of form something like :

<form name="foo">
<input type=button onclick=alert(...here i like to alert the form name ...) >
</form>

so the result of the alert will be the form name.
thanks

[umm]

<form name="foo">
<input type="text" name="df">
<input type="button" onclick="alert(this.form.name)" value="Test" >
</form>