Todo List
SC_GraphBase | --SC_GraphLine | --SC_GraphBar
void drawBar( $line_no)
void drawGraph( )
void drawLabel( $line_no)
void SC_GraphLine( [ $bgw = BG_WIDTH], [ $bgh = BG_HEIGHT], [ $left = LINE_LEFT], [ $top = LINE_TOP], [ $area_width = LINE_AREA_WIDTH], [ $area_height = LINE_AREA_HEIGHT])