This is Conditional Drop-down List, easy to use and can put drop down list any where in the post / page -
Sample Usage:
[select id="conditional_dropdown"] [option value=""]Select[/option] [option value="http://www.google.com"]Option 1[/option] [option value="http://www.bing.com"]Option 2[/option] [option value="http://www.yahoo.com"]Option 3[/option] [/select]
