$(document).ready(function(){
    colapseImage();
});

function expandImage(){
    $("#img_plamani").animate({
    width: '140',
    height: '140'
  }, 1000, function() {
    colapseImage();
  });
}

function colapseImage(){
    $("#img_plamani").animate({
    width: '130',
    height: '130'
  }, 1000, function() {
    expandImage();
  });
}