Jquery resize image with a heart beat effect

Question

Hello want to make a image with a heartbeat effect. It has to resize a bit, let's say maximum 20 pixel bigger, and then goes to original size. It will be like a heartbeat, 2 beats - original, 2 beats - original.

So far I found only this effect:

    (function pulse(back) {
    $('#seventyfive').animate(
        {
            'font-size': (back) ? '100px' : '140px',
            opacity: (back) ? 1 : 0.5
        }, 700, function(){pulse(!back)});
})(false);

Or you can check it out here: JSFiddle

Answer 1

This code should work 

(function pulse(back) {
$('#seventyfive img').animate(
    {
        width: (back) ? $('#seventyfive img').width() + 20 : $('#seventyfive img').width() - 20            
    }, 700);
$('#seventyfive').animate(
    {          
        'font-size': (back) ? '100px' : '140px',
        opacity: (back) ? 1 : 0.5
    }, 700, function(){pulse(!back)});
})(false);