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How is this possible...


plznty

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http://www.w3schools.com/Ajax/Default.Asp

 

I suggest having a version number that updates each time you change the content, use AJAX to check the version number every few seconds, if it doesn't match it's version number, display the alert

 

Okay ive never used AJAX before even though i have always wanted to. Could you explain or give some example using ajax to how its done

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I would start here as w3 schools explains it very well, but basically, with ajax, you create an object (either xmlhttpobject for non ie browsers, or activex object for ie) and you set a request to a page (written in a server side language, like php, asp, etc.) This page then returns something back.

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