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When you posted that node, did you see some text that said:

If something looked unlike you expected it to you might need to check out Writeup Formatting Tips

Which bit of that didn't you understand? Or do you always write your code like that?

It's much easier to help you if you surround your code in <code> ... </code> tags.

Update: Yeah, OK. I mistyped "bit" as "did". Corrected :(

"The first rule of Perl club is you don't talk about Perl club."

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.