> $.fn.border = function(prefix){
>    var classNames = [ 'north', 'east', 'south', 'west', 'northeast',
'southeast', 'southwest', 'northwest'];
>    return this.each(function(){
>       for (var index in classNames){
>          className = (prefix || '')+ classNames[index];
>          $(this).wrap("<div class='" + className + " block'></div>")
>       }
>    })
> };

Danger warning! Don't use for..in on an array! Use a C-style loop instead.


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