$(document).ready(function(){ 
var bounce = $('.mi');
	function jump(){
	bounce.each(function(){
		   $(this).hover(function(){
		   $(this).animate({'top':'-=15px'},125).animate({'top':'+=15px'},125).animate({'top':'-=10px'},100).animate({'top':'+=10px'},100);
			});
	  });
	};
		//wywolanie jump	
		jump();	
		
});