import java.awt.*;
import java.applet.*;
import java.net.*;
import java.lang.*;
import java.awt.image.MemoryImageSource;

public class button extends Applet {
	int 	x=0,y=0,StrPosX,StrPosY,picw,pich;
	Color White;
	Font MyFont;
	Image img;
	FontMetrics Fo;
	String ButtonText,Width,Height,Link;
	URL url;
	
	public void init() {
		
  		White = new Color(255,255,255);
		setBackground(White);
		ButtonText = getParameter("text");
		Width = getParameter("width");
		Height = getParameter ("height");
		Link = getParameter ("link");
		picw = java.lang.Integer.parseInt(Width);
		pich = java.lang.Integer.parseInt(Height);
		int  pix[]  =  new  int[picw  *  pich];
		int  index  =  0;
		int blue;
		int green;
		for  (int  y  =  0;  y <  pich;  y++)  {
			int Offset = (int)Math.sqrt( ((picw)*(picw)) + ((y-pich)*(y-pich)) );
			for  (int  x  =  0;  x  <  picw;  x++)  {
				blue  = 255 - (int)((Offset-x)*(155/(float)picw));
				green = 200 - (int)((Offset-x) * (200/(float)picw));
                		// To correct for area not within circle
				if (blue<0) blue=100;
				if (green<0) green=0;

				pix[index++]  =  (255<<24) |	(0<<16) |	(green<<8) | blue;
			}
		}
		img  =  createImage(new  MemoryImageSource(picw,  pich,  pix,  0,  picw));
		MyFont = new Font("Helvetica",Font.BOLD,(pich/2));
		repaint();
	}
	
	public void showNewPage (URL u) {
		getAppletContext().showDocument(u);
	}
		
	public void paint(Graphics g) {
		Fo = g.getFontMetrics(MyFont);
		StrPosX = (picw - Fo.stringWidth(ButtonText))/2;
		StrPosY = pich/2 + Fo.getAscent()/2;
		g.drawImage(img,x,y,picw,pich,this);		
		g.setFont(MyFont);
		g.setColor(White);	
		g.drawString(ButtonText,StrPosX,StrPosY);
	
	}

	public boolean mouseUp(Event e, int posx, int posy) {
		try {
			url = new URL(Link);
		}
		catch (Exception MalformedURLException) {
			;
		}
		showNewPage(url);
		return false;
	}

}