div.roll_m {position:relative; margin: 0;}
div.roll_c {display: none; background:#ffc; padding: 17px 5px 10px 0;}
a.roll_t {color:#00f; text-decoration:none; margin: 0 0 0 10px;}
a.roll_b {color:#00f; text-decoration:none; border-bottom: 1px dotted #00f; margin: 0 0 0 10px;}
a.roll_t:hover, a.roll_b:hover {color:#c00;}

.roll_i1 {margin: 0 5px 0 0;}
.roll_i2 {border-bottom: 1px dotted #00f;}