Here is a nifty little thing you can do to to allow your viewser change the size of the text on the fly.
Create a text widget and set the title as 'Change Text Size'. In the text area of the widget add
HTML Code:
<a href="javascript:void(0);" onclick="javascript:body.style.fontSize='.8em'"><span style="font-size: xx-small;">+</span></a> <a href="javascript:void(0);" onclick="javascript:body.style.fontSize='1em'"><span style="font-size: x-small;">+</span></a> <a href="javascript:void(0);" onclick="javascript:body.style.fontSize='1.2em'"><span style="font-size: small;">+</span></a> <a href="javascript:void(0);" onclick="javascript:body.style.fontSize='1.4em'"><span style="font-size: large;">+</span></a> <a href="javascript:void(0);" onclick="javascript:body.style.fontSize='1.6em'"><span style="font-size: x-large;">+</span></a>