var LATIN_MAP = {
    'À': 'A', 'Á': 'A', 'Â': 'A', 'Ã': 'A', 'Ä': 'A', 'Å': 'A', 'Æ': 'AE', 'Ç':
    'C', 'È': 'E', 'É': 'E', 'Ê': 'E', 'Ë': 'E', 'Ì': 'I', 'Í': 'I', 'Î': 'I',
    'Ï': 'I', 'Ð': 'D', 'Ñ': 'N', 'Ò': 'O', 'Ó': 'O', 'Ô': 'O', 'Õ': 'O', 'Ö':
    'O', 'Ő': 'O', 'Ø': 'O', 'Ù': 'U', 'Ú': 'U', 'Û': 'U', 'Ü': 'U', 'Ű': 'U',
    'Ý': 'Y', 'Þ': 'TH', 'ß': 'ss', 'à':'a', 'á':'a', 'â': 'a', 'ã': 'a', 'ä':
    'a', 'å': 'a', 'æ': 'ae', 'ç': 'c', 'è': 'e', 'é': 'e', 'ê': 'e', 'ë': 'e',
    'ì': 'i', 'í': 'i', 'î': 'i', 'ï': 'i', 'ð': 'd', 'ñ': 'n', 'ò': 'o', 'ó':
    'o', 'ô': 'o', 'õ': 'o', 'ö': 'o', 'ő': 'o', 'ø': 'o', 'ù': 'u', 'ú': 'u',
    'û': 'u', 'ü': 'u', 'ű': 'u', 'ý': 'y', 'þ': 'th', 'ÿ': 'y'
}
var LATIN_SYMBOLS_MAP = {
    '©':'(c)'
}

var ALL_DOWNCODE_MAPS=new Array()
ALL_DOWNCODE_MAPS[0]=LATIN_MAP
ALL_DOWNCODE_MAPS[1]=LATIN_SYMBOLS_MAP

var Downcoder = new Object();
Downcoder.Initialize = function()
{
    if (Downcoder.map) // already made
        return ;
    Downcoder.map ={}
    Downcoder.chars = '' ;
    for(var i in ALL_DOWNCODE_MAPS)
    {
        var lookup = ALL_DOWNCODE_MAPS[i]
        for (var c in lookup)
        {
            Downcoder.map[c] = lookup[c] ;
            Downcoder.chars += c ;
        }
     }
    Downcoder.regex = new RegExp('[' + Downcoder.chars + ']|[^' + Downcoder.chars + ']+','g') ;
}

downcode= function( slug )
{
    Downcoder.Initialize() ;
    var downcoded =""
    var pieces = slug.match(Downcoder.regex);
    if(pieces)
    {
        for (var i = 0 ; i < pieces.length ; i++)
        {
            if (pieces[i].length == 1)
            {
                var mapped = Downcoder.map[pieces[i]] ;
                if (mapped != null)
                {
                    downcoded+=mapped;
                    continue ;
                }
            }
            downcoded+=pieces[i];
        }
    }
    else
    {
        downcoded = slug;
    }
    return downcoded;
}


function URLify(s, num_chars) {
    // changes, e.g., "Petty theft" to "petty_theft"
    // remove all these words from the string before urlifying
    s = downcode(s);
    removelist = ["a", "an", "as", "at", "before", "but", "by", "for", "from",
                  "is", "in", "into", "like", "of", "off", "on", "onto", "per",
                  "since", "than", "the", "this", "that", "to", "up", "via",
                  "with"];
    r = new RegExp('\\b(' + removelist.join('|') + ')\\b', 'gi');
    s = s.replace(r, '');
    // if downcode doesn't hit, the char will be stripped here
    s = s.replace(/[^-\w\s]/g, '');  // remove unneeded chars
    s = s.replace(/^\s+|\s+$/g, ''); // trim leading/trailing spaces
    s = s.replace(/[-\s]+/g, '-');   // convert spaces to hyphens
    s = s.toLowerCase();             // convert to lowercase
    return s.substring(0, num_chars);// trim to first num_chars chars
}