How to reload a page after x seconds? client side or server trick?

JavaScript
2 

<script language="JavaScript" type="text/javascript">
setTimeout("location.href = 'redirect_here.html'",10000); // milliseconds, so 10 seconds = 10000ms
</script>

Note that this script should be in the redirect_here.html too, if you wish to keep on reloading.
However, you can also do this with pure html. Like this:


<meta http-equiv="refresh" content="10; url=redirect_here.html">

(the first parameter of the content-attribute means the time in seconds)
Put it between the starting/ending head tags.