Table Grid lines

For my grid,i need solid horizontal lines for rows and light(like transparent) vertical lines for the columns.

How can i do it in the grid.

The styles for default skins defined in dhtmlxgrid.css

div.gridbox table.obj td {
    border: 1px solid;
    border-color : white Gray Gray white;         << this is colors of borders, you can change them, or their height to get necessary result
    font-family:Arial;
    font-size:12px;
    -moz-user-select:none;
    overflow:hidden;
    padding-top:0px;
    padding-bottom:0px;
    empty-cells:show;
    }

Please beware that css contains different classes for each skin, mentioned one used for default skin.