<layers>
  <visual>
    <param name="scale_x" type="anim">
      <duration>0.15</duration>   
       <style>outquad</style>   
      <keyframe at="0.0">0.9</keyframe>
      <keyframe at="1.0">1.0</keyframe>
    </param>
    <param name="scale_y" type="anim">
      <duration>0.15</duration>
      <style>outquad</style>  
      <keyframe at="0.0">0.9</keyframe>
      <keyframe at="1.0">1.0</keyframe>
    </param> 
    
    	<param name="opacity" type="anim">
	        <duration>0.15</duration>
	        <keyframe at="0.0">0.0</keyframe>
	        <keyframe at="1.0">1.0</keyframe>
	    </param>

    <param name="scale_origin_x" ref="visual.width">0.5</param>
    <param name="scale_origin_y" ref="visual.height">0.5</param>
  </visual>
</layers>