title: Jquery Multi Select box Plugins
body: <p>I have multiple select in my form. I have groups and items in each group. </p>
  
  <p>Countries and major cities in each country. </p>
  
  <p>On selecting country, it shows all major cities which you select.</p>
  
  <p>I am looking for small and fast loading plugin.</p>
  
  <p>I appreciate any help.</p>
  
  <p>Thanks.</p>