    .x-grid-cell-checkcolumn .x-grid-cell-inner {
        padding-top: 4px;
        padding-bottom: 2px;
        line-height: 14px;
    }
    .x-grid-with-row-lines .x-grid-cell-checkcolumn .x-grid-cell-inner {
        padding-top: 3px;
    }
    .x-grid-checkheader {
        height: 14px;
        background-image: url('images/unchecked.gif');
        background-position: 50% -2px;
        background-repeat: no-repeat;
        background-color: transparent;
    }

    .x-grid-checkheader-checked {
        background-image: url('images/checked.gif');
    }

    .x-grid-checkheader-editor .x-form-cb-wrap {
        text-align: center;
    }