From a form action, I am calling a javascript function with the form object. However, the this syntax doesn't seem to work. I have to pass document.forms instead.

This doesn't work.

...FORM NAME=Sujet ACTION=javascript:Go(this)

< SCRIPT>
function Go(toForm)
{
   alert(toForm.MyField.value);
}

This works.

...FORM NAME=Sujet ACTION=javascript:Go(document.forms.Sujet)

< SCRIPT>
function Go(toForm)
{
   alert(toForm.MyField.value);
}

Why?