Move in - Move out ??

Move in - Move out ??

Here is the example I am working on:

silkegaeng.com/working

On the right-top corner you can see the Audio Icon. That should simply move the div "audioplayer" in on hover. And of course it should disappear on mouseout...

What is happening is a strange effect, that it sometimes "shakes", moves quickly in and out, even when i dont move the mouse... whats wrong?

  1.        jQuery(document).ready(function($) {
    	$('#audioplayer').mouseenter(function(){
            $('#audioplayer').animate({right: '-20px'}, 200),
        
        
    	 	$('#audioplayer').mouseleave(function(){
    	        $('#audioplayer').animate({right: '-360px'}, 200);
    	        });
    	});
    });