.mtDropdownMenu {
 LEFT: -1imagespx; OVERFLOW: hidden; POSITION: absolute; TOP: -1imagespx
}
.mtDropdownMenu .content {
 POSITION: absolute
}
.mtDropdownMenu .items {
 BORDER-BOTTOM: #ffffff 1px solid; BORDER-LEFT: #ffffff 1px solid; BORDER-RIGHT: #ffffff 1px solid; BORDER-TOP: #ffffff 1px solid; LEFT: 0px; POSITION: relative; TOP: 0px; Z-INDEX: 2
}
.mtDropdownMenu .item {
 BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; BORDER-RIGHT: medium none; BORDER-TOP: medium none; COLOR:#ffffff; CURSOR: hand; FONT-FAMILY: "Verdana", "Arial", "Helvetica", "sans-serif"; FONT-SIZE: 9 pt; TEXT-DECORATION: none; EXT-DECORATION: none
}
.mtDropdownMenu .background {
 FILTER: alpha(opacity=75); LEFT: 0px; POSITION: absolute; TOP: 0px; Z-INDEX: 1; moz-opacity: .8
}
.mtDropdownMenu .shadowRight {
 FILTER: alpha(opacity=40); POSITION: absolute; TOP: 3px; WIDTH: 2px; Z-INDEX: 3; moz-opacity: .4
}
.mtDropdownMenu .shadowBottom {
 FILTER: alpha(opacity=40); HEIGHT: 2px; LEFT: 3px; POSITION: absolute; Z-INDEX: 1; moz-opacity: .4
}
.mtDropdownMenu .hover {
 BACKGROUND: #FF8000; COLOR: #ffffff
}
.一丁，上面为菜单底色和文字色
.mtDropdownMenu .item IMG {
 MARGIN-LEFT: 10px
}