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This is where things get interesting. First, the <embed> element is deprecated in HTML 4.0, and nonexistent in HTML 4.01 and XHTML. Obviously, this calls for other measures. In place of <embed>, you must use the <object> element. It also needs a height, width, and type, but it uses the data attribute to specify where the SVG document lives. Any content between the opening and closing <object> tags will be displayed if the browser doesn't support the type of object you've specified.
<object data="some_file.svg" width="100" height="200"
type="image/svg+xml">
<p>
Sorry, but your browser doesn't support
SVG objects. What a pity.
</p>
</object>