changing input type from text to password on the fly

Hi, id like to change the type of a text field into a password field.
the thing is, the field should first say
'password' and as soon as the user clicks the field it should clear and change to a password field so the typed word is in *s.

any ideas?

Thanks, Bas

You would think this would work.

<form name="myForm">
<input type="text" name="user" value="username" /><br />
<input onFocus="javascript: this.type = 'password'; this.value = '';" type="text" value="Password" name="pass" />
</form>

but since the type element is read only you can not do it that way...so you'll need to create a function that will destroy the form element 'pass' and write a new one.

At least that is how my thinking is leading me.