.postbody img { 
    max-width: 600px; 
    /* Resize the image for IE6 */ 
    width: expression(this.width > 600 ? 600: true); 
} 
/*FOCUS*/
.postbody img {
  -webkit-transition: all 1s ease;
     -moz-transition: all 1s ease;
       -o-transition: all 1s ease;
      -ms-transition: all 1s ease;
          transition: all 1s ease;
}
.postbody img:hover {
  border: 20px solid #000;
  border-radius: 30%;
}