Redirect To New Page ?

I have a form in which i have a dropdown list and a submit button. I want to code so that when users select the value from the dropdown list, it should redirect then to the specified page. For instance i have the value, "car", "House" and "pets" in my dropdown listbox, if a use click on "car" it should redirect them to the car page. I have done the following code, but something seems not to work :(

And in the submit button am calling the function move()

My form name is sell and the dropdown list menu is cat.