[tangoforce]

As LC says, you need to put the code inside the { and } braces. This is your code:

            if ((curPageName() == $url) && (curPageName() !== $index)) {
                $class='current';
            }
            echo "<li><a href='$url' class='$class'>$name</a></li>";
            elseif (curPageName() == $index) {
                $class='current home';
            }

That bold red line cannot be there. It must be either completely outside the if/elseif or inside one of the brace sets.