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August 21, 2000 Changing the Font Size on the Fly  Tips: August 2000
Yehuda Shiran, Ph.D.
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Color change is a relatively simple task for the browser, as the size of the element does not change and there is no need to reflow the document. This is not the case when you change other style properties, such as fontSize or fontFamily. When they change, the amount of space required by the element changes as well, and the browser needs to reflow the document to ensure a perfect layout. Let's take the following paragraph as an example. Mouse over and out of it:Mouse over this paragraph and see how the font size changes to size 30. Mouse out and see it go down to 8. This is a good way to pack more text on a window-size page and let the user magnify the paragraph currently being read. See how the browser reflows the page as if this paragraph was originally written with the current font size. Here is the code to implement it:
Learn more about the subject in Column 66, Dynamic Styles.
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