How to create a modal window (lightbox) in Wordpress?

Is there a way to create a modal window?

so if you have a text field where you have hyperlink text. When someone clicks on it can you make it where it opens a pop up or modal window like this:

http://netdna.webdesignerdepot.com/uploads7/creating-a-modal-window-with-html5-and-css3/demo.html#close

either with jotform. Or using a 3rd part wordpress plugin??

We do have a wordpress widget that assists with embedding forms to wordpress:

http://www.jotform.com/blog/83-Embed-Form-Plugin-for-Wordpress

Then you can embed its lightbox version:

http://www.jotform.com/help/220-How-to-Create-a-Lightbox-Form

Here is a test using our Feedback Plugin, which is very similar in the function

http://jeanettebmz.qsandbox.com/

If you are interested in the JotForm Feedback button, here is the link

http://apps.jotform.com/app/wordpress_feedback_button

So I dont want my form to be in the lightbox. I want a clickable text that is IN the form to open a lightbox with more detail.

If you want a modal window on a form, then you must download it's source code, then 3rd party  plugin that handles the full source code along with the modal window might do the trick.