Problems getting two scripts working together.

function SceneWindow2D::onMouseDown( %this , %modifier , %worldPosition , %mouseClicks )
{
   $FireWeaponActive = true;
   %time = GetTimeWeapons();
   ship.setTimerOn( %time );
   ship.RunTimer();
}
function SceneWindow2D::onMouseUp( %this , %modifier , %worldPosition , %mouseClicks )
{
   Ship.setTimerOff();
   $FireWeaponActive = false;
}

function SceneWindow2D::onRightMouseDown( %this , %modifier , %worldPosition , %mouseClicks )
{
   $RightMouseClickDetected = true;
}

function SceneWindow2D::onRightMouseUp( %this , %modifier , %worldPosition , %mouseClicks )
{
   $RightMouseClickDetected = false;
}

function GetTimeWeapons( %this )
{
   %time = 0.1;
   %time *= 1000;
   return%time;
}

function ShipClass::onTimer( %this )
{
   %this.RunTimer();
}

function ShipClass::RunTimer( %this )
{
   %angle = FindShootAngle();
   Ship.turnSpeed = 250.0;
   ship.rotateTo( %angle , ship.turnSpeed , true , false , true,  0.1 );
   $FireAngle = Ship.getRotation();
   FireWeapon( $FireAngle );
}

function FireWeapon( $FireAngle )
{
   FireMainLaser( $FireAngle );
}

function FindShootAngle()
{
   %vec = t2dVectorSub( Ship.getPosition() , SceneWindow2D.getMousePosition() );
   return -mRadToDeg( mATan( getWord( %vec , 0 ) , getWord( %vec,1 ) ) );
}

function FireMainLaser( $FireAngle )
{
   %MainLaser = new t2dStaticSprite()
   {
      scenegraph = sceneWindow2D.getScenegraph();
      class = MainLaserClass;
   };
   %MainLaser.setProperties( $FireAngle );

}

function MainLaserClass::setProperties( %this , $FireAngle )
{
   %this.setImageMap( LasersImageMap );
   %this.setSize( 1.5 , 1.5 );
   %this.setPosition( Ship.getPosition() );
   %this.setRotation( $FireAngle );
   %this.setImpulseForcePolar( $FireAngle , 125 );
   %this.setCollisionActive( true , true );
   %this.setCollisionPhysics( false , false );
   %this.setCollisionCallback( true );
   %this.setCollisionLayers( "20" );
   %this.setWorldLimit( "kill" , -55 , -40 , 55 , 40 , false );
   %this.setLayer ( "15" );
   %this.setLifeTime( 0.5 );
}

function MainLaserClass::onCollision( %srcObj , %dstObj , %srcRef , %dstRef , %time , %normal , %contactCount , %contacts )
{
   %srcObj.safeDelete();
}