Hiding and displaying Object (image or text) by a custom toolbar button

Hi,

Just wanted to know, if there is a way to hide or show, certain
objects like an image or a string of text.

I.e. a toolbat button, would be responsible for either hiding the
image or text, and also for showing the image or text.

how can this be done.

Thanks in Advance

Sajid Saeed
.