Underline a word -text box HTML?

However, to me the question is not quite clear. Are you referring to a hyperlink or just an underlined word?

For a word that is just underlined, a <acronym title="h t m l">HTML</acronym> would pop up a box reading h t m l when hovering over HTML.

Is that what you mean?

The question was

Underline a word in a web site

If they want the mouse over command to show, then that is a different command.

and in connection with that question, a simple underline makes no sense.

Unless of course the person really asked 2 unrelated questions -that's possible, but not how I took it.

He says; ''When you point the mouse over the word this is underline, its displays a small box text box (like information, etc)''

I believe what he is asking is the ''alt'' function within the <img src> anchor.

If you had this;
<a href=''web-page.html''><img src=''image.jpg'' alt=''click here!''></a>,

then a mouse over of the image would produce a popup box saying, ''click here''.

But I don't know of a way to do this with a simple <a> link, eg;
<a href=''web-page.html alt=''Click the link''>Click here</a>

would not produce a popup when the mouse hovers over the link. The mouse would just hover over an underlined link called ''Click here''.

Mark