Parentheses don't keep together with the jpeg within

Working in RoboHelp 8, I have a number of pictures of buttons within paragraphs. In this case, I have this combination in a custom-sized pop-up. I am having a hard time keeping the close or open parentheses on the same line as the picture.

This is a picture of the text as written.

This is a picture of the text as it is viewed (eyeglasses).

This is the html:

At the

bottom of the Tree view are <span style="font-weight: bold;">Expand All</span>

(<img src="Expand all button.jpg" alt="" style="border: none;" width="70"

   height="21" border="0" />) and <span style="font-weight: bold;">Collapse

All</span> (<img src="Collapse All button.jpg" alt="" style="border: none;"

      width="75" height="21" border="0" />) buttons.

I've been fiddling with the custom size to make it stay together - but am wondering if there is anything I can do when writing to make sure the parentheses stays with the picture within.

Thanks so much.