body{
background:#fff url(bg.gif);
background-repeat: repeat-x repeat-y;
}
#container{
width:600px;
height:683px;
margin:auto;
padding-top:10px;
}
#sisu{
width:594px;
height:457px;
overflow:auto;
font-family:Arial, Helvetica, sans-serif
}
.link1{
width:70px;
height:29px; 
background-image: url("images/index_04.png");
display:block;
border:none;
margin:auto;
float:none;
}
.link1:hover{
background-image: url("images/index_04h.png");
}
.link2{
width:78px;
height:29px; 
background-image: url("images/index_05.png");
display:block;
border:none;
margin:auto;
float:none;
}
.link2:hover{
background-image: url("images/index_05h.png");
}
.link3{
width:83px;
height:29px; 
background-image: url("images/index_06.gif");
display:block;
border:none;
margin:auto;
float:none;
}
.link3:hover{
background-image: url("images/index_06h.gif");
}