marking the text in a text box

[pelegk1]

i have a text box
that when i press in the text box its will show the text inside like i moved the mouse all over the text and marked it!
how do i do it?
20x:)
peleg

[Nevermore]

Do you actually want it selected or just highlighted?

[havik]

Something like this?

<input type="text" value="Your text field" onFocus="this.select()">

Havik

[Nevermore]

Or just to highlight it and not select it, you could try
<input type="text" value="Your text field" onFocus="this.style.background='blue'">