img{ margin: 0 5px 10px 5px; background:no-repeat 0 0; text-decoration:none; height:225px; width:187px; display:block; border:0;}

.image1 img { background:0 0 url(../gallery/birthday/001.jpg);}
.image1:hover img{ background: 0 225px url(../gallery/birthday/001a.jpg);}

.image2 img { background:0 0 url(../gallery/birthday/002.jpg);}
.image2:hover img{ background: 0 225px url(../gallery/birthday/002a.jpg);}

.image3 img { background:0 0 url(../gallery/birthday/003.jpg);}
.image3:hover img{ background: 0 225px url(../gallery/birthday/003a.jpg);}

.image4 img { background:0 0 url(../gallery/birthday/004.jpg);}
.image4:hover img{ background: 0 225px url(../gallery/birthday/004a.jpg);}

.image5 img { background:0 0 url(../gallery/birthday/005.jpg);}
.image5:hover img{ background: 0 225px url(../gallery/birthday/005a.jpg);}

.image6 img { background:0 0 url(../gallery/birthday/006.jpg);}
.image6:hover img{ background: 0 225px url(../gallery/birthday/006a.jpg);}

.image7 img { background:0 0 url(../gallery/birthday/007.jpg);}
.image7:hover img{ background: 0 225px url(../gallery/birthday/007a.jpg);}

.image8 img { background:0 0 url(../gallery/birthday/008.jpg);}
.image8:hover img{ background: 0 225px url(../gallery/birthday/008a.jpg);}

.image9 img { background:0 0 url(../gallery/birthday/009.jpg);}
.image9:hover img{ background: 0 225px url(../gallery/birthday/009a.jpg);}

.image10 img { background:0 0 url(../gallery/birthday/010.jpg);}
.image10:hover img{ background: 0 225px url(../gallery/birthday/010a.jpg);}

.image11 img { background:0 0 url(../gallery/birthday/011.jpg);}
.image11:hover img{ background: 0 225px url(../gallery/birthday/011a.jpg);}

.image12 img { background:0 0 url(../gallery/birthday/012.jpg);}
.image12:hover img{ background: 0 225px url(../gallery/birthday/012a.jpg);}

.image13 img { background:0 0 url(../gallery/birthday/013.jpg);}
.image13:hover img{ background: 0 225px url(../gallery/birthday/013a.jpg);}

.image14 img { background:0 0 url(../gallery/birthday/014.jpg);}
.image14:hover img{ background: 0 225px url(../gallery/birthday/014a.jpg);}

.image28 img { background:0 0 url(../gallery/birthday/b005.jpg);}
.image28:hover img{ background: 0 225px url(../gallery/birthday/b005a.jpg);}