php/javascript

[Anon]

Hello, I want to know if its possible to detect the following things:

1 cookies enabled/disabled
2 javascript enabled/disabled - version
3 screen resolution/color dept

What I want to do is run a small javacode on my site and pass wether it is true or false, etc.

Then log it using php into a database.

<script language="javascript">
<!--
$cookies = "disabled";
if (cookies = 1) {
$cookies = "enabled";
}
//-->
</script>

<?
echo "you have cookies " . $cookies;
?>

Can someone help me with the javascript coding? ..and/or if this possible?

Thanks!

[vfwood]

the first page has the following

<script language = 'javascript'>
var scW = 'unknown';
if (screen.availWidth) {
scW = screen.availWidth;
}

document.write ("<img src = 'tracker.php?js=1&scW=" + scW + "' height = '1' width = '1'>");
</script>
<noscript>
<img src = 'tracker.php?js=0&scW=unknown' height = '1' width = '1'>
</script>

where tracker.php will have $scW - screenwidth, $js (1 = enabled, 0 = disabled). the cookies could be enabled without javascript so I'd suggest setting a cookie before the script/noscript above and checking for it in tracker.php

hope this helps.

[Anon]

what would be the javascript code for the color depth?

256colors
16bit
24bit
32bit

[vfwood]

if (screen.colorDepth) {
scD = screen.colorDepth;
}