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    <p>After digging for a day and a night in the guts of the internets, here is what I came up with:</p> <ol> <li><p>server-sent events - Very cool, currently works only in Opera, but may be part of HTML5 and other browsers may support it sometime. Adds a new element tag with content-type of "application/x-dom-event-stream" which allows the <strong>Server</strong> to fire events in the <strong>Client DOM</strong>. And it should not show a progress indicator, as far as I understand. It's also a working draft of a standard, and not a hack like the whole iframe comet thing.</p></li> <li><p>XMLHttpRequest - in Firefox and Safari, but not in IE, it can be used for long-pull page loading that enables to handle fragments as they appear on each readyStateChange event. Will not show progress indicator*. -- see comment below</p></li> <li><p>ActiveXObject("htmlfile") - can be used in IE to create a page/window that is outside of the current window scope. This makes the progress indicator go away! The loaded iframe will be in an invisible browser.</p></li> </ol> <p>More about server-sent-events:</p> <ul> <li><a href="http://my.opera.com/WebApplications/blog/show.dml/438711" rel="noreferrer">http://my.opera.com/WebApplications/blog/show.dml/438711</a></li> </ul> <p>And more about the other two techniques (also explains the problem better): * <a href="http://meteorserver.org/browser-techniques/" rel="noreferrer">http://meteorserver.org/browser-techniques/</a></p> <p>Even more in-depth about each technique, and more techniques:</p> <ul> <li><a href="http://cometdaily.com/2007/12/11/the-future-of-comet-part-1-comet-today/" rel="noreferrer">http://cometdaily.com/2007/12/11/the-future-of-comet-part-1-comet-today/</a></li> <li><a href="http://cometdaily.com/2008/01/10/the-future-of-comet-part-2-html-5%E2%80%99s-server-sent-events/" rel="noreferrer">http://cometdaily.com/2008/01/10/the-future-of-comet-part-2-html-5’s-server-sent-events/</a></li> </ul>
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    1. POStop the browser "throbber of doom" while loading comet/server push iframe
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    1. POStop the browser "throbber of doom" while loading comet/server push iframe
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    1. COWhen using method (2), XHR, it needs to be invoked AFTER the page finished loading. For example using setTimeout(). If it starts before the page finished spinning the throbber, then it will continue spinning it while loading the XHR - and an "ESC" can abort it, so its bad.
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    2. COThanks for that comment Evgeny. I have been banging my head against my page for weeks now. Adding a few second timeout before polling fixed my page throbber issue.
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    3. CO@Evgeny Unfortunately the timeout solution doesn't work in Chrome, it still gives me a loading indicator (Works in Firefox, though). Any hints?
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