asp.net - Show progress img while loading a page -

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i want show loading gif while page loading. opening popup window javascript using window.open. want display image when mozilla or ie progress bar being shown gmail when login. there way can achieve this?

i know how show loading img after page loaded want progressbar of browser

you need add pre-loading progress bar script. please see links

http://davidwalsh.name/mootools-image-preloading-progress-bar

http://davidwalsh.name/dw-content/image-preloader.php


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