Jquery expand and shrink on click

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

HTML

<div></div>

CSS

div{
 position: relative;
    top: 50%;
    left: 50%;
    margin-left: -50px;
   
    text-align: center;
    background:#333;
    width:80px;
    height:80px; 
    border-radius:50%;
     overflow: hidden;
     
    
}

JavaScript

$(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";
            //}
    });		
});