.lay-head{
position: absolute;
left: 50%;
margin-left: -355px;
top: 0%;
margin-top: 5px;
width: 710px;
height: 52px;
z-index: 1;
}


.lay-menu{
position: absolute;
left: 50%;
top: 60px;
width: 200px;
height: 21px;
z-index: 4;
}
.lay-menulink{
position: absolute;
left: 0px;
top: 20px;
width: 204px;
border-style: solid;
border-color: gray;
border-width: 1px;
background-color: white;
z-index: 1;
visibility: hidden;
}
.lay-smenulink{
position: absolute;
left: 0px;
top: 20px;
width: 200px;
height: 21px;
z-index: 1;
visibility: inherit;
}

.lay-presentation{
position: absolute;
left: 50%;
margin-left: -175px;
top:200px;
width: 350px;
border-style: solid;
border-color: gray;
border-width: 1px;
background-color: white;
text-align: center;
z-index: 1;
visibility: hidden;
}
.lay-headtit{
position: absolute;
left: 125px;
top: -20px;
width: 100px;
height: 20px;
text-align: center;
z-index: 1;
visibility: inherit;
}

.lay-link{
position: absolute;
left: 50%;
margin-left: -355px;
top: 100px;
width: 350px;
height: 180px;
z-index: 1;
}

.lay-menub{
position: absolute;
left: 50%;
margin-left: -300px;
top: 100%;
margin-top: -40px;
with: 600px;
height: 22px;
z-index: 1;
}

.lay-baseline{
position: absolute;
left: 50%;
margin-left: -300px;
top: 50%;
margin-top: 275px;
width: 600px;
height: 20px;
font-family: verdana,helvetica;
font-size: 10px;
color: gray;
text-align: center;
z-index: 2;
}

.lay-bottom{
position: absolute;
left: 50%;
margin-left: -295px;
top:100%;
margin-top: -30px;
width: 700px;
height: 25px;
z-index: 2;
font-family: arial,helvetica;
font-size: 10px;
}