on mouse down in a form helper?

[eluser]R_Nelson[/eluser]
im using this to crate an input box for a form

Code:

form_input('name', set_value('name'));

what i would like is to have 'Your Name Here' or something like that in the box but in a light grey and use onmousedown to clear the box when they click the box to type how do i do this?

I am fairly certain in can figure out the Java/Jquery part just need to bale to get it into the form input.

[eluser]R_Nelson[/eluser]
i found the answer to my question :

Code:

$extra = 'onfocus="this.value=\'\'"';
echo '<label>Name :</label> '.form_input('name', set_value('name','Your Name Here'),$extra);