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Editorial Team
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Asked: 2026-05-27T21:31:54+00:00

The following code works only in Chrome. I need it to run on all

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The following code works only in Chrome. I need it to run on all major browsers. Firefox and IE load the image once. Opera doesn’t load it at all.

The screen.jpg file is sent with Cache-Control: no-cache, no-store. I cannot use a library like jQuery because they’re too big.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title></title>
<script type="text/javascript">
function refresh()
{
    document.getElementById("screen").src = "screen.jpg";
    setTimeout("refresh()", 500);
}
</script>
</head>
<body style="margin:0" onload="refresh()">
<img id="screen" style="width:100%"/>
</body>
</html>
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1 Answer

  1. Editorial Team

    you can append random number to the end of source so that the image is re-requested every time:

    document.getElementById("screen").src = "screen.jpg?" + Math.random()*999999;
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