Here is the link to site I'm currently working on, its not that far at the moment but had a question to see if somebody here can let me know if what I'm trying to achieve can be done with HTML and CSS.

Superior Medical - live like new

For examply what I want is say when you rollover the h2 word "Our company" in yellow that maybe a speech bubble popups next to the figure illustration, either that or the picture changes to a image with a speech bubble next to a figure so like loads in a new image. Is this possible with HTML and CSS and if so, could you please direct me in the right direction on how to achieve this or is it something that needs jQuery and if so would anyone know of some jQuery which may be out there that I can use to achieve this effect.