$(document).ready(function()
{
    $('.klocek').mouseover(function(){
        $(this).animate({width: "+=300px", height: "+=300px", left: "100px", opacity: "0.5"}, 1500);

    });
    $('.klocek').mouseout(function(){
        $(this).animate({width: "-=300px", height: "-=300px", left: "0px", opacity: "1"}, 1500);

    });


});