Why Mouse hidden when Application.LoadLevel

I set bosshp < 1 use Application.LoadLevel(nextLevel); (nexe scene)

when next scene Mouse Hidden ?

help me

thank you.

Script Boss

var hpboss:int=50;
var nextLevel:String;

function OnCollisionEnter (collision:Collision)
{
if ( hpboss < 1 )
{ 
transform.position.x= 6.236305;
transform.position.y= 1.518473;
transform.position.z= 1.362101; 

yield WaitForSeconds( 3 );
Application.LoadLevel(nextLevel);
}
}

Script Boss (pause picture in scene)

function OnMouseEnter ()
{ Time.timeScale = 0; }

function OnMouseExit ()
{ Time.timeScale = 1; }

Create a new Javacript and attach it to any gameobject in the new loaded scene.

Code:

    function Start() {
    	Screen.lockCursor = false;
    }