a:link { text-decoration: none}
a:visited { text-decoration: none}
a:hover { text-decoration: underline}

.cell_top 
{
border-style: solid;
border-color: #C0C0C0;
border-top-width: 1;
border-bottom-width: 0;
border-left-width: 1;
border-right-width: 1;
}

.cell_left 
{
border-style: solid;
border-color: #C0C0C0;
border-top-width: 1;
border-bottom-width: 0;
border-left-width: 1;
border-right-width: 0;
}

.cell_right
{
border-style: solid;
border-color: #C0C0C0;
border-top-width: 1;
border-bottom-width: 0;
border-left-width: 0;
border-right-width: 1;
}

.cell_hela
{
border-style: solid;
border-color: #C0C0C0;
border-top-width: 1;
border-bottom-width: 1;
border-left-width: 1;
border-right-width: 1;
}