.bk2 {  border: 1px double #999999}
.bk3 {
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: none;
	border-right-style: solid;
	border-bottom-style: solid;
	border-left-style: solid;
	border-top-color: #999999;
	border-right-color: #999999;
	border-bottom-color: #999999;
	border-left-color: #999999;
}
.bk4 {
	
	border-right-width: 1px;
	border-top-style: none;
	border-right-style: solid;
	border-bottom-style: none;
	border-left-style: none;
	border-top-color: #999999;
	border-right-color: #999999;
	border-bottom-color: #999999;
	border-left-color: #999999;
}
.bk5 {
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: solid;
	border-right-style: solid;
	border-bottom-style: solid;
	border-left-style: none;
	border-top-color: #999999;
	border-right-color: #999999;
	border-bottom-color: #999999;
	border-left-color: #999999;
}
.bk6 {
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: none;
	border-right-style: solid;
	border-bottom-style: solid;
	border-left-style: none;
	border-top-color: #999999;
	border-right-color: #999999;
	border-bottom-color: #999999;
	border-left-color: #999999;
}
.bk7 {
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: none;
	border-right-style: solid;
	border-bottom-style: solid;
	border-left-style: solid;
	border-top-color: #999999;
	border-right-color: #999999;
	border-bottom-color: #999999;
	border-left-color: #999999;
}
.bk8 {
	border-top-width: 1px;
	border-right-width: 1px;
	border-bottom-width: 1px;
	border-left-width: 1px;
	border-top-style: none;
	border-right-style: none;
	border-bottom-style: solid;
	border-left-style: none;
	border-top-color: #999999;
	border-right-color: #999999;
	border-bottom-color: #999999;
	border-left-color: #999999;
}