$(document).observe('dom:loaded', function(e){
                $$('a[rel^="redir:"]').each(function(v){
                        //syntax
                        //rel="redir:p+n=v|p-n=v|h+v|h-
                        //p+ adds a name value pair
                        //p- removes a name value pair
                        //h+ changes the hash
                        //h- removes the hash
                        
                        //disect current href
                        var url = {q:[]}
                        var parts = v.href.split(/\?|\#/)
                        url.d = parts.shift()
                        while(parts.length > 0){
                                var p = parts.shift()
                                if (p.indexOf('=') > -1)
                                        url.q = p.split('&')
                                else
                                        url.h = p
                        }
                        //append redir
                        parts = v.rel.replace('redir:','').split('|')
                        while(parts.length > 0){
                                var p = parts.shift()
                                if (p.indexOf('p+') > -1)
                                        url.q.push(p.replace('p+',''))
                                else if (p.indexOf('p-') > -1)
                                        url.q = $A(url.q).without(p.replace('p-',''))
                                else if (p.indexOf('h+') > -1)
                                        url.h = p.replace('h+','')
                                else if (p.indexOf('h-') > -1)
                                        url.h = false
                        }
                        
                        //change href
                        v.href = url.d
                        if(url.q.length > 0) v.href += '?' + url.q.join('&')
                        if(url.h) v.href += '#' + url.h
                })
        })