How can I change appearance of 'tip' and 'info' window?

The appearance of 'tip' and 'info' window (popup) is controlled by style sheet, which is speicfied at css file: wwgmaps/wwgmap.css.

The default site tip is listed as follows:

.sitetip {
border: #006699 1px solid;
font-size: 12px;
font-weight: bold;
color: black;
BACKGROUND-COLOR: #ffffff;
}

The default 'info' window style is

.sitepopup {
border: #006699 0px solid;
font-size: 10px;
font-weight: bold;
width: 250px;
color: black;
BACKGROUND-COLOR: #ffffff;
font-family: "Times New Roman", Times, serif;
}