Expand and shrink animate on click jquery

This short jquery script makes an element shrink or expand on click. Simple logic is added to make the script toggle on click.

$(document).ready(function() {     
    var move = "expand";
    $('div').click(function(){
            if (move == "expand"){
                $('div').animate({width:"30px",height:"30px"},500);
                move = "shrink";
            } else {
                $('div').animate({width:"80px",height:"80px"},500); 
                move = "expand";
            }
    });  
});

Live Demo