Pan Orthographic Camera?

I have a 2d game and I want it so when the mouse button is down and I drag the mouse the camera pans with the mouse. How would I do this. I code in javascript by the way. Thanks in advanced.

This isn’t Javascript, however, the transformation would be pretty straightforward.

void update 
        //Is the button mapped as fire down?
        if (!Input.GetButtonDown("Fire1")) 
            Screen.LockCursor = false;

        Screen.LockCursor = true; 
        float moveDownY = 0.0f;
        // Gets the Y axis movement of the mouse, allows the scroll to be infinite
        // If you use mouse position, you'll be limited by screen space
	    var y = Input.GetAxis("Mouse Y");
	    moveDownY += y*Sensitivity.sensitivityY;
	    if (y != 0.0f)
            // Moves the Camera a distance equivalent to the mouse movement.
            Camera.Main.Transform.Translate(Vector3.up * moveDownY);

        float moveDownX = 0.0f;
        //Gets the X axis movement of the mouse
	    var x = Input.GetAxis("Mouse X");
        moveDownX += x * Sensitivity.sensitivityX;
	    if (x != 0.0f)
            Camera.Main.Transform.Translate(Vector3.right * moveDownX);

Here is a simple solution that I made :

if (Input.GetMouseButton(1)) {
    float sensitivity = 1;
    float x = Input.GetAxis("Mouse X");
    float y = Input.GetAxis("Mouse Y");
    camera.transform.Translate(new Vector3(-x, -y, 0) * sensitivity);