1.首先编辑css模板，可以在最后面加入以下代码。

/* 图片鼠标滑过放大*/
.gallerycontainer{position: relative;}
.thumbnail img{border: 1px solid white;margin: 0 5px 5px 0;}
.thumbnail:hover{background-color: transparent;}
.thumbnail:hover img{border: 1px solid blue;}
.thumbnail span{ /*CSS for enlarged image*/
position: absolute;
background-color: lightyellow;
padding: 5px;
left: -1000px;
border: 1px dashed gray;
visibility: hidden;
color: black;
text-decoration: none;
}
.thumbnail span img{ /*CSS for enlarged image*/
border-width: 0;
padding: 2px;}
.thumbnail:hover span{ /*CSS for enlarged image*/
visibility: visible;top: 0;
left: 200px; /*position where enlarged image should offset horizontally */
z-index: 50;
}

　　2.在日志编辑html处，加入以下代码：
　
　　<div class="gallerycontainer">
<a class="thumbnail" href="#thumb"><img src="小图地址" width="100px" height="100px" border="0" /><span><img src="原始图片地址" /><br />图片文字说明</span></a>
<a class="thumbnail" href="#thumb"><img src="小图地址" width="100px" height="100px" border="0" /><span><img src="原始图片地址" /><br />图片文字说明</span></a>
</div>