There is a zoom CSS property, but it is part of CSS3 and is most likely not widely supported. By setting this on the body
element using JavaScript you can zoom the entire page.
I would agree with the sentiments of the answers to the question you linked to though in that it should be up to the user to choose their own zoom settings. If your site is too big/small to see, it indicates a problem with your site design.
与恶龙缠斗过久,自身亦成为恶龙;凝视深渊过久,深渊将回以凝视…