// 스트링에 포함된 URL 패턴 추출 하여 리턴
function getUrlFromString ( str ){

 var matchUrl = new Array();
 
 var pattern = /([^a-zA-Z0-9\-\.]+)((http:\/\/)?[a-zA-Z0-9\-\.]+\.(kr|co[.]+kr|com|net|org|tel|asia|cn|com[.]+cn|me|biz|in|eu|info|or[.]+kr|pe[.]+kr|cc|tv|ac|jp|name|mobi|tw|KR|CO[.]+KR|COM|NET|ORG|TEL|ASIA|CN|COM[.]+CN|ME|BIZ|IN|EU|INFO|OR[.]+KR|PE[.]+KR|CC|TV|AC|JP|NAME|MOBI|TW|edu|EDU)(([\/\?]+[.a-zA-Z0-9\?=%&_\/\-\$]*)*))(.*)$/;
 
 matchUrl = str.match(pattern);
 
 if(matchUrl != null)
 {
  return matchUrl[2];
 }
 else
 {
  return null;
 }
 
}