How to enable/disable scripts on keyboard input (java)?

Sorry for the amateur question, but I just can't figure out to get this script working. Our basic setup is a first person mode and once the escape key is pressed, the mouse orbit is disabled (so users can click on the search bar without moving the camera). What would I need to add for the escape key to re-enable the mouse orbit (and disable the search bar)?

 #pragma strict
 
 var script : dropDownList;
 var script2 : MouseOrbit;
 
 function Start () {
 
     script = GetComponent(dropDownList); //change the name in the bracket to match the name of the search bar script
     script.enabled = false;
     
     script2 = GetComponent(MouseOrbit);
     script2.enabled = true;
     
 }
 
 function Update () {
 
     if(Input.GetKey(KeyCode.Escape)) { //key code can be changed to a different key
         script = GetComponent(dropDownList);
         script.enabled = true; 
         
         script2 = GetComponent(MouseOrbit);
         script2.enabled = false;}
 
         
 }

Thanks in advance