function zenCssButton($image = '', $text, $type, $sec_class = '', $parameters = '') {

    // automatic width setting depending on the number of characters
    $min_width = 80; // this is the minimum button width, change the value as you like
    //$character_width = 6.5; // change this value depending on font size!
    $character_width = 8.5; // change this value depending on font size!

$min_width = 80;
$character_width = 8.5;