[рони]

Alex1233,
может без скрипта ?

.list_box img {
   -moz-transition: all 1s ease-out;
 -o-transition: all 1s ease-out;
 -webkit-transition: all 1s ease-out;
transition: all 1s ease-out;
 }

.list_box img:hover{
 -webkit-transition-delay: 0.5s;
  -moz-transition-delay: 0.5s;
 -o-transition-delay: 0.5s;
 transition-delay: 0.5s;

 -webkit-transform: scale(1.5);
 -moz-transform: scale(1.5);
 -o-transform: scale(1.5);
 transform: scale(1.5);
 }