| <?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> |
