import java.applet.Applet; 
import java.awt.*;
public class msgfly extends Applet implements Runnable{
  Image img;
  Graphics wg;
  int w,h,mc;
  String msg[]=new String[50];
  String f_name="TimesRoman";
  Thread th;
  public void init() {
    w=getSize().width;
    h=getSize().height;
    img=createImage(w,h);
    wg=img.getGraphics();
    mc=Integer.parseInt(getParameter("msgc"));
    for (int i=0;i<mc;i++) {
      msg[i]=getParameter("msg"+i);
    }
  }
  public void start(){  
    if (th == null){
      th = new Thread(this);
      th.start();
    }
  }
  public void paint(Graphics g) {g.drawImage(img,0,0,this);}
  public void update(Graphics g) {paint(g);}
  public void stop() { th=null;}
  public void run() {
    int x=0,y=0,c=0;
    double  s=0;
    int ind=1;
    int f_size=1;
    Font font;
    FontMetrics f_m=null;
    while (th !=null) {
      wg.setColor(Color.black);
      wg.fillRect(0,0,w,h);
      if ( f_size < h-10) {
        font=new Font(f_name,Font.PLAIN,f_size);
        f_m = getFontMetrics(font);
        wg.setFont(font);
        x=(w-f_m.stringWidth(msg[c]))/2;
        y=h/2+(f_m.getAscent()-f_m.getDescent())/2;
        f_size+=2;
      }
      else {x +=s*ind;s+=1;}
      wg.setColor(Color.white);
      wg.drawString(msg[c],x,y);
      repaint();
      if (x < -f_m.stringWidth(msg[c]) | x > w) {
        c++;
        if (c >= mc) {c=0;}
        f_size=1;s=0;ind*=-1;
      }
      try {th.sleep(50);}
      catch (InterruptedException e) {showStatus(" " +e);}
    }
  }
}