function urlLink(target) {

   var obj = document.getElementById(target);

   var contents = obj.innerHTML;

   var url = contents.match(/https?:\/\/[-.!~*\'()\w;\/?:\@&=+\$,%#]+/ig);

   if (url) {
      for (var i = 0; i< url.length; i++) {
         var replace = "<a href=\""
                     + url[i]
                     + "\" target=\"_blank\">"
                     + url[i]
                     + "</a>";
         contents = contents.replace(url[i], replace);
      }
   }
   return contents;

}