Del Wegener wrote: > I have been fighting these same issues for a several years and I am > convinced that the best method is to use images.
Hardly. Using images for such purposes are the last resort and always come with problems, even if you define them with CSS settings that make them scale according to font size and provide adequate alt attributes. For example, any text in an image has a specific shape which practically always differs from the one in text characters. An "a" in your image is different from an "a" in your text, which is bad if they are supposed to be same variale. > You can see illustrations by looking at some of the examples on > http://www.drdelmath.com/intermediate_algebra/chapter_summary/intermediate_algebra_chapter1_summary.htm It should be easy to see some of the fundamental problems there. It is not easy to find any example of the use of fraction bar there. I'm afraid you misunderstood the question, or the OP misunderstood what "fraction bar" means. It means a character resembling "/" but with different angle and properties, used to construct fractional numbers in a particular rendering, similar to that of "½". There are some _characters_ such as "½" that you can use in documents. Even a character for 2/3 exists in Unicode and is relatively well supported by fonts (even in Arial). So they might be suitable if you really want fractions. You can write e.g. the vulgar fraction 2/3 as a character in HTML using the reference ⅅ. Check out Unicode resources such as http://www.fileformat.info/info/unicode/ to find what's available. For some notes on using HTML and CSS for presenting mathematical expressions, check http://www.cs.tut.fi/~jkorpela/math/ There's no good approach to fraction slash issue, in cases where the vulgar fractions are not suitable. You would need to reduce the size of digits, which tends to make their lines too thin, and positioning the digits well with respect to the slash (whether you use "/" or the Unicode fraction slash character) in a cross-browser way might be mission impossible. In the OP's document, I would worry more about issues like using the proper minus sign (−) instead of the ambiguous hyphen-minus "-". (On a very ambitious web page, you would even consider using CSS, e.g. the vertical-align property, to position a minus sign well in the vertical direction. It should be obvious that e.g. if a−x looks good, then A−X won't, since lowercase and uppercase letters would require different vertical position for the minus.) -- Yucca, http://www.cs.tut.fi/~jkorpela/ ______________________________________________________________________ css-discuss [[email protected]] http://www.css-discuss.org/mailman/listinfo/css-d List wiki/FAQ -- http://css-discuss.incutio.com/ List policies -- http://css-discuss.org/policies.html Supported by evolt.org -- http://www.evolt.org/help_support_evolt/
