I'm currently making some changes to a site of mine with a view to decreasing load time. One change I have made, in the site's header image, is to remove the name of the site from the image, and instead overlay it on top using text. It looks acceptable, but when doing some testing in IE I realised there is a facility at browser level to make text larger (or smaller), and if someone makes it larger, the text doesn't fit in that space. Do many people actually use IE's tool to manually increase text size? I know it's going to be mostly old people or people with poor vision, but roughly what percentage of internet users as a whole are in this category?
I think the other browsers have to zoom feature so it makes everything bigger and somewhat solves that problem. So most people would just do that. I think you might only be able to change that on earlier versions of IE. I don't know if this helped, or if it was want you wanted to hear. Cheers.
Mostly older people or people trouble seeing, I mean not to mention NOT that many people use IE to begin with. Nothing to worry about I would say. You can always set the text as "em"s or percentage
Thanks for the suggestions. To clarify, I have the text set to 275%, which fits perfectly in Firefox, Chrome, IE and Safari when no browser-level text size increases are made; it is when the text size is set to be larger that it makes it look stupid. If there's no ability to override text size increases, I'll leave it as it is for now I think.