Demo buttons code:
<?php
use Phphleb\Hlogin\App\System\UserRegistration;
if (UserRegistration::checkPrimaryAndHigher()) {
print '<button onclick="hloginVariableOpenPopup(\'UserProfile\')">Open user profile panel</button>';
} else {
print '<button onclick="hloginVariableOpenPopup(\'UserRegister\')">Open registration panel</button>';
print '<button onclick="hloginVariableOpenPopup(\'UserEnter\')">Open login panel</button>';
}
print '<button onclick="hloginVariableOpenPopup(\'ContactMessage\')">Open the message sending panel</button>';
print '<button onclick="hloginSetDesignToPopups(\'special\')">Version for the visually impaired</button>';
print '<button onclick="hloginRevertDesignToPopups()">Undo version change</button>';