Those visually impaired may be able to increase the size of the text on screen.
Internet Explorer 7.0 (Windows)
Select the 'Page' menu, then 'Text Size', and then your chosen size (or if you have a mouse wheel simply hold down CTRL and roll the mouse wheel to alter the text size).
Internet Explorer 6.0 (Windows)
Select the 'View' menu, then 'Text Size', and then your chosen size (or if you have a mouse wheel simply hold down CTRL and roll the mouse wheel to alter the text size).
Internet Explorer 5.5 (Windows, Mac)
Select the 'View' menu, then 'Text Size', and then your chosen size (or if you have a mouse wheel simply hold down CTRL and roll the mouse wheel to alter the text size).
Firefox 1.0+
Select the 'View' menu, then 'Text Size', and then select decrease or increase. Alternatively select CTRL + + or CTRL + -.
Opera 7.0+
Select the 'View' menu, then 'Zoom', and then select the percentage increase or decrease you require. Alternatively select CTRL + + or CTRL + -.
Safari 1.2+ (Mac)
Select the 'View' menu, then 'Make Text Bigger' or 'Make Text Smaller'. Alternatively select Apple + + or Apple + -