OOzy,
I'm not exactly sure whether you want to pop open a new browser window with the "More Info" data in it, or what you're looking for is a dropdown menu simliar to a right-click on your desktop. If it's the former, you can place target="_blank" in the link and it will force a new browser window to open. If it's the later you need to use DHTML, PHP doesn't do any client-side stuff and that is most definately client-side. If DHTML's the way you choose to go, there are a couple pitfalls you must be aware of and take into consideration.
First, DHTML is browser dependant so you have to do lot's of extra coding to make sure that everyone visiting your site can use the menu. IE reacts differently than Netscape 4.0 which in turn reacts differently from Netscape 6.0 and Mozilla Seamonkey.
Second, DHTML is dependent on JavaScript. Because of this, while it's a great tool and can create some really stunning effects, you shouldn't rely on it exclusively for any feature that is essential to the operation of your site.... like navigation. A classic example is Microsoft's site. If you visit using IE, the links in the black bar (top right hand corner) expand into DHTML menus that provide access to their product line, tech. support, site searches, etc. If you visit using Netscape or Mozilla you get none of that because their code only works with IE. While in keeping with M$'s strategies, it's still an unbelievably stupid (or arrogrant..... you choose) ommission which prevent's roughly 40% of users for experiencing the site properly or, more importantly, using it effectively.
The moral? Use DHTML as you would JavaScript or any other client-side tech.. It's great for added fluff and functionality, but don't use it for anything essential since that puts the control in the hands of your users and let's them break your site by mistake. Hope this rant helps:-}
Cheers,
Geoff A. Virgo
