mkUrl = function(s){
   var r=s.toLowerCase();
   r = r.replace(new RegExp(/\s/g),"");
   r = r.replace(new RegExp(/[àáâãäå]/g),"a");
   r = r.replace(new RegExp(/æ/g),"ae");
   r = r.replace(new RegExp(/ç/g),"c");
   r = r.replace(new RegExp(/[èéêë]/g),"e");
   r = r.replace(new RegExp(/[ìíîï]/g),"i");
   r = r.replace(new RegExp(/ñ/g),"n");
   r = r.replace(new RegExp(/[òóôõö]/g),"o");
   r = r.replace(new RegExp(/œ/g),"oe");
   r = r.replace(new RegExp(/[ùúûü]/g),"u");
   r = r.replace(new RegExp(/[ýÿ]/g),"y");
   r = r.replace(new RegExp(/\W/g),"");

   r = r.toLowerCase();
   r = r.replace(new RegExp(/[^a-z0-9_\s-]/g), "");
   r = r.replace(new RegExp(/[ -]+/g), "");
   r = r.trim();
   r = r.replace(new RegExp(/[ _]/g), "");
   return r;
};

$('#string').bind('keyup change', function () {
  var string = $("#string").val();
  $("#result").html(mkUrl(string));

});