| <?xml version="1.0" standalone="yes"?> | |
| <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> | |