xpos=100+extpad;
xpos=extpad;
    public String getToolTipText(MouseEvent event) {      int xpos=100+extpad, ypos=extpad+2*fm.getHeight();	        for(int j=m_selectedAttribs.length-1; j>=0; j--) {	for(int i=0; i<m_selectedAttribs.length; i++) {	  if(event.getX()>=xpos && event.getX()<=xpos+cellSize+extpad)	    if(event.getY()>=ypos && event.getY()<=ypos+cellSize+extpad)	      return("X: "+m_data.attribute(m_selectedAttribs[i]).name()+		     " Y: "+m_data.attribute(m_selectedAttribs[j]).name()+		     " (click to enlarge)");	  xpos+=cellSize+extpad;	}	xpos=100+extpad;	ypos+=cellSize+extpad;      }      return ("Matrix Panel");    }