Is there any way to auto-adjust webpage resolution with desktop resolution?

Can a website designer detect a user's screen resolution and adjust webpage's resolution accordingly?

Yes,

With the combination of server side scripting and client side scripting, it is possible:

<script language="javascript">
<!--
 document.write('<a href=getscrsize.php?scrw='+screen.width+'&scrh='+screen.height+'>');
//-->
</script>
Clich here to tell what me your screen size is!</a>

Then, in the PHP script, you can get the screen size by using these two variables:

$_GET['scrw']
$_GET['scrh']

Thank you very much.