Trying to create a pop-up window creates 2 identical windows

Question

Hello,
I am trying to accomplish the following:
Clicking text in my webpage and causing a small pop-up window to open.  I have tried this 2 ways: the first way, I get a new tab in my browser, but it is full-sized; the second way, I get a new tab in my browser AND a small pop-up window.
Here's the first way:
1. highlighting the text that should be an "object."
2. entering a URL in "Link."
3. defining the "Target" as _blank
This opens my link in a new browser tab.  This is good, but I'd like this to be a smaller pop-up window so that my full-sized webpage remains in the background.  Please note that if I select any other option for the "Target" or leave that box empty, my webpage is replaced by the url entered in the "link",
Here's the second way:
1. highlighting the text that should be an "object."
2.  entering a URL in "Link."
3. leaving the "Target" box empty
4. selecting "open browser window" in "behaviors" and defining that window as a smaller size
This opens my link in a new browser tab AND opens a smaller  pop-up of that same link.  My webpage remains in another browser tab, but is not showing in the background (I have to close both the pop-up and new browsesr tab in order to get back to my webpage).
Dreamweaver doesn't allow me to leave the "Link" field blank and select "open browser window" in "behaviors," which I believe is causing thi redundancy.  Since my "object" is not an imported image, but rather, text (such as "click here" that I hope to turn into an object), I wonder if I have to import some kind of file (e.g. jpg, etc. ) as an object in order to achieve my goal.  Can anyone tell mw what I'm doing wrong?
Thanks in advance for any help!
Heather

Answer 1

John,
Thank you for your reply--since you need to use javascript for this, I take it this is either not possible or very difficult to do in Dreamweaver?
I'm going to try your script.  May I ask a few questions first?
1.  Can I do this for multiple links on one page, and if  so, which parts would I repeat and where/ how?
2.  Which of the values in quotations below do I replace with my own data?  I think it's "my-file.htm," "A PopUp Window of Helpful Search + Information Links" and "open_links()"?
3.  For the part that goes "anywhere you want in the body," do you mean by "body" the general section with that type of data in it?  Or does that mean anywhere on the page?
4.  Finally, If I prefer not to create a button, but rather, to leave it as text with a highlighted color for a link, is that possible?  I think it would require an input type other than "='button'", but what are my other options?
Thanks again,
Heather