Edit in JSFiddle

<div class="stars">
  <div class="rating" style="width:65%"></div>
  <input type="radio" name="rating" id="star5" value="5">
  <label for="star5"></label>
  <input type="radio" name="rating" id="star4" value="4">
  <label for="star4"></label>
  <input type="radio" name="rating" id="star3" value="3">
  <label for="star3"></label>
  <input type="radio" name="rating" id="star2" value="2">
  <label for="star2"></label>
  <input type="radio" name="rating" id="star1" value="1">
  <label for="star1"></label>
</div>

.stars{
    width: 130px;
    height: 26px;
    background: url(http://sandbox.bumbu.ru/ui/external/stars.png) 0 0 repeat-x;
    position: relative;
}

.stars .rating{
    height: 26px;
    background: url(http://sandbox.bumbu.ru/ui/external/stars.png) 0 -26px repeat-x;
}

.stars input{
    display: none;
}

.stars label{
    display: none;
    position: absolute;
    top: 0;
    left: 0;
    height: 26px;
    width: 130px;
    cursor: pointer;
}
.stars:hover label{
    display: block;
}
.stars label:hover{
    background: url(http://sandbox.bumbu.ru/ui/external/stars.png) 0 -52px repeat-x;
}

.stars label + input + label{width: 104px;}
.stars label + input + label + input + label{width: 78px;}
.stars label + input + label + input + label + input + label{width: 52px;}
.stars label + input + label + input + label + input + label + input + label{width: 26px;}

.stars input:checked + label{
    display: block;
    background: url(http://sandbox.bumbu.ru/ui/external/stars.png) 0 -52px repeat-x;
}