FormsCentral does not support hyperlink in the choices of a drop down field. If you like users to select a choice in your drop down and then go to html linked form/page/site you could try to use formatted text fields with a hyperlink there and then use skip logic rules to show the corresponding formatted text field.
Say you have a drop down field with choice1, choice2, choice3. Below this, you would create three formatted text fields, one for choice1, one for choice2, and one for choice3:
- In the formatted text you would insert a hyperlink via the menu Insert / Link. Set Link Text: some text with reference to your html-linked-form1 and the URL will be url of your html-linked-form1. You would do the same with formatted text field 2 and formatted text field 3.
- Then you would use skip logic rule to show formatted text field 1 when user selects choice1 or formatted text field 2 when user selects choice 2...(select a formatted text field, check skip logic rules checkbox on the right panel, you should be able to go from here to add your conditions.)
Hope this helps,