How to clear drop down list?

Hi,

 

I have 5 drop down lists in my webpage which transfers the data to a database to be stored.

One of the drop down lists is as follows;

 

Male or Female

Once I press the "Add Employee" button the form must clear to be able to add another employee.

I am able to clear the text boxes on the form but the code I am using to clear the drop down list, clears all the list items in the drop down list and I am unable to use the list items in the dropdown list when I need to add another employee.

 

Drop down list code;

This code clears all the list items in the drop down list, which is not what i need.

 

How can I clear the drop down selected value when the "Add Employee" button is pressed and still keep the list items in the drop down list?

 

My code for the webpage below;