in the common.css file, change:
.pg-rlp-tip {
width: 200px;
background-image: url(../images/dark_tip_bottom.png);
background-repeat: no-repeat;
background-position: 50% 100%;
}
to:
.pg-rlp-tip {
width: 200px;
background-image: url(../images/dark_tip_bottom.png);
background-repeat: no-repeat;
background-position: 50% 100%;
z-index: 10;
}