Auto clear Default Value

I know you guys wrote how to do this with jQuery but loading jQuery just for this is overkill. A much simpler method:

<input value="Your name" onfocus="if (this.value == 'Your name') {this.value = '';}" onblur="if (this.value == '') {this.value = 'Your name';}" />

Would love support for this to be built-in (as in a checkbox bellow the Default Value in the admin).

Cheers.

Awesome, thanks. :)