I have installed zoom and it is working great but when a user clicks on another page the text goes back to the original size. How can I stop the text going back to the original size?

Dear Karl,

Please be informed, that unfortunately this is not a bug, but Zoom Module's functionality. It does not keep the site text zoomed when the user changes the page.
Thank you.

Ok can it be done if so how much?

Dear Karl,

Please be informed, that unfortunately we don't have spare resources to make the customization.
Thank you.

You can zoom in to get a close-up view of your file or zoom out to see more of the page at a reduced size. You can also save a particular zoom setting with a document or template, presentation or page resizing .

I realized your problem. this is the first time I heard such a problem. You can zoom your page to see it in large size and can reduce to your appropriate page size. You can search the reason in google and you can find the better suggestion from there.