picture1on=new Image(); 
picture1off=new Image(); 
picture1in=new Image(); 
picture2on=new Image(); 
picture2off=new Image();
picture2in=new Image(); 
picture3on=new Image(); 
picture3off=new Image();
picture3in=new Image();  
picture4on=new Image(); 
picture4off=new Image();
picture4in=new Image();  
 
picture1on.src="images/menu/m01-1.gif";
picture1off.src="images/menu/m01-0.gif";
picture1in.src="images/menu/m01-2.gif";
picture2on.src="images/menu/m02-1.gif";
picture2off.src="images/menu/m02-0.gif";
picture2in.src="images/menu/m02-2.gif";
picture3on.src="images/menu/m03-1.gif";
picture3off.src="images/menu/m03-0.gif";
picture3in.src="images/menu/m03-2.gif";
picture4on.src="images/menu/m04-1.gif";
picture4off.src="images/menu/m04-0.gif";
picture4in.src="images/menu/m04-2.gif";

function ImageRoll(x, y) {
document.images[x].src=eval(y+'.src');
	}