libxmljs
Version:
libxml bindings for v8 javascript engine
17 lines (16 loc) • 582 B
text/xml
<smil>
<body>
<!-- The SMIL <switch> element will process the
first child element which tests true and skip
past all others. -->
<switch>
<!-- The system-required attribute tests to see if
the user agent supports SVG. If true, then
render the file drawing.svg. -->
<ref system-required="http://www.w3.org/Graphics/SVG/svg-19990412.dtd" type="image/svg" src="drawing.svg"/>
<!-- Else, render the alternate image. -->
<img src="alternate_image.jpg"/>
</switch>
</body>
</smil>