The visitor of your web site PHP-NUKE can change to the design or theme quickly with this block

<?php

if (eregi("block-Themes.php", $PHP_SELF)) {
Header("Location: index.php");
die();

}
global $user, $userinfo, $Default_Theme, $cookie;

getusrinfo($user);
$content .="<center>";
$content .= "<form action="modules.php?name=Your_Account" method="post">";
$content .= "<p></p>";
$content .= "<BR>";
$content .= "<select name="theme" onchange=submit();>";
$handle=opendir('themes');
while ($file = readdir($handle)) {
if ( (!ereg("[.]",$file)) ) {
$themelist .= "$file ";
}
}
closedir($handle);
$themelist = explode(" ", $themelist);
sort($themelist);
for ($i=0; $i < sizeof($themelist); $i++) {
if($themelist[$i]!="") {
$content .= "<option value="$themelist[$i]" ";
if((($userinfo[theme]=="") && ($themelist[$i]=="$Default_Theme")) || ($userinfo[theme]==$themelist[$i])) $content .= "selected";
$content .= ">$themelist[$i]n";
}
}
$content .= "</select>";

$content .= "<input type="hidden" name="storynum" value="$userinfo[storynum]">";
$content .= "<input type="hidden" name="ublockon" value="$userinfo[ublockon]">";
$content .= "<input type="hidden" name="ublock" value="$userinfo[ublock]">";
$content .= "<input type="hidden" name="uname" value="$userinfo[uname]">";
$content .= "<input type="hidden" name="user_id" value="$userinfo[user_id]">";
$content .= "<input type="hidden" name="op" value="savetheme">";

$content .= "</form>";
$content .= "</center>";

?>