"iframe" sitedown fallback via <object>

gistfile1.html

<!-- so it turns out that the object tag can act like an iframe 
     but the cool thing is you can nest object tags inside eachother for a fallback path.
    what this means is you can "objectframe" a site.. and if it fails.. (site down, offline, whatever).. it'll use the next one.

    so you can objectframe the live site and fallback to a screenshot.
    or something.

    demo at : http://jsfiddle.net/paul/CY2FQ/1/
-->


<object data="http://thisurlwillfail.sohard">
    <object data="http://paulirish.com">
        <object data="/images/screenshot.png"></object>    
    </object>
</object>


<!-- this could probably work in IE with some classid bullshit
     http://intranation.com/test-cases/object-vs-iframe/


     also in this case there can be an ISP that intercepts your failed DNS (which fucks it up) but in most cases a site timeout wont trigger that so it'll be ok. :)
-->
​

It should be noted that if you are using privacy extensions (like ScriptNo) those things referenced as "objects" will have to be whitelisted, just like you would have to white-list third-party cookies, tracking scripts and other off-site material.