function openpopup(url){
    width = 600;
    height = 400;
    name = 'imagepopup';

    var open_args="toolbar=0,location=0,directories=0,status=0,scrollbars=1,menubar=0, resizable=1,width="+width+",height="+height;
    open_args += ",left="+(screen.availWidth-width)/2+",top="+(screen.availHeight-height)/2;
    var ablak = window.open(url, name, open_args);
    ablak.focus();
  }

  function pasteBithDate(birthdate){
    imagetarget = window.opener.document.getElementById('baby_born');
    imagetarget.value = birthdate;
  }