Moving object with vector3 lerp

Hi, I am currently creating a menu and I want the camera to move gradually to a position when a button is pressed. I have tried using a Vector3.Lerp but cannot get it to work well.

Here is my script:

 var StartGame = false;
 var Quit = false;
 var Options = false;
 
 var camera : GameObject;
 
 function OnMouseEnter ()
 {
     renderer.material.color = Color.yellow;
 }
 
 function OnMouseExit ()
 {
     renderer.material.color = Color.white;
 }
 
 function OnMouseUp ()
 {
     if(StartGame == true){
     
         Application.LoadLevel(1);
     
     } else if(Quit == true){
     
         Application.Quit();
     
     } else if(Options == true){
     
         camera.Vector3.Lerp(0, 5, 0, 4);
     
     }
 }