function drawGrid( me, face, horizontal, vertical, idx, tickPosn, pp ) {
    var ii = 0, uu = 0;
    var grid = _GetGrid( me.Min[horizontal] / me.Parent.Zoom[horizontal], me.Max[horizontal] / me.Parent.Zoom[horizontal], me.Scale[horizontal] );
    if( me.GridDelta[horizontal] != 0 ) grid.step = me.GridDelta[horizontal];

    for( var jj = grid.max; jj >= grid.min; jj -= grid.step ) {
        pp[horizontal] = jj * me.Parent.Zoom[horizontal];
        pp[vertical] = me.Min[vertical];
        var vv = me.Parent.ScreenPos( pp );
        fromOV( me.Line[idx][ii], vv.x, vv.y ); // Move to the start(min) of this gridline

        var xx = vv.x, yy = vv.y; // copy of start x/y for later
        pp[vertical] = me.Max[vertical];
        vv = me.Parent.ScreenPos( pp );  // pp changed; get again
        toOV( me.Line[idx][ii], vv.x, vv.y );  // And draw to the other(max) end
        me.Line[idx][ii].setAttribute( "stroke", me.StrokeColor );  // Set the color
        me.Line[idx][ii].setAttribute( "visibility", "visible" );   // and make visible

        if( tickPosn ) { // Move the tick labels to the appropriate end of the gridlines; 1.06 standoff of label; uu (fudge factor for zooming (not used))
            me.Text[idx][ii].setAttribute( "x", Math.floor( xx + ( vv.x - xx ) * 1.06 ) - 50 * uu );
            me.Text[idx][ii].setAttribute( "y", Math.floor( yy + ( vv.y - yy ) * 1.06 ) -  7 * uu );
        }
        else {
            me.Text[idx][ii].setAttribute( "x", Math.floor( vv.x + ( xx - vv.x ) * 1.06 ) - 50 * uu );
            me.Text[idx][ii].setAttribute( "y", Math.floor( vv.y + ( yy - vv.y ) * 1.06 ) -  7 * uu );
        }
        me.Text[idx][ii].setAttribute( "fill",  me.StrokeColor );
        me.Text[idx][ii].setAttribute( "visibility", "visible" );
        
        if( ( ii == 1 ) && ( me.Label[horizontal] ) )  // if 1st (not zeroth?) gridline, add the axis label
            innerTextOV( me.Text[idx][ii], me.Label[horizontal] );
        else { // otherwise add the tick value
            if( isNaN( me.Scale[horizontal] ) ) {
                if( me.Scale[horizontal].substr( 0,9 ) == "function " ) {
                    ff = eval( "window." + me.Scale[horizontal].substr( 9 ) );
                    if( ff ) innerTextOV( me.Text[idx][ii], ff( _ScaleString( jj, grid.step ) ) );
                }
                else innerTextOV( me.Text[idx][ii], _ScaleString( jj, grid.step ) + me.Scale[horizontal] );
            }
            else {
                if( me.Scale[horizontal]  < 1 ) innerTextOV( me.Text[idx][ii], "" );
                if( me.Scale[horizontal] == 1 ) innerTextOV( me.Text[idx][ii], _ScaleString( jj, grid.step ) );
                if( me.Scale[horizontal]  > 1 ) innerTextOV( me.Text[idx][ii],  _DateFormat( jj, grid.step, me.Scale[horizontal] ) );
            }
        }
        ii++;
    }
}