if (document.images)
{
	but1 = new Image();
	but1_on = new Image();
	but1_on.src = "./images/but1_on.jpg";		
	but1_off = new Image();
	but1_off.src = "./images/but1_off.jpg";
	
	but2 = new Image();
	but2_on = new Image();
	but2_on.src = "./images/but2_on.jpg";		
	but2_off = new Image();
	but2_off.src = "./images/but2_off.jpg";
	
	but3 = new Image();
	but3_on = new Image();
	but3_on.src = "./images/but3_on.jpg";		
	but3_off = new Image();
	but3_off.src = "./images/but3_off.jpg";
	
	but4 = new Image();
	but4_on = new Image();
	but4_on.src = "./images/but4_on.jpg";		
	but4_off = new Image();
	but4_off.src = "./images/but4_off.jpg";
	
	but5 = new Image();
	but5_on = new Image();
	but5_on.src = "./images/but5_on.jpg";		
	but5_off = new Image();
	but5_off.src = "./images/but5_off.jpg";
	
	but6 = new Image();
	but6_on = new Image();
	but6_on.src = "./images/but6_on.jpg";		
	but6_off = new Image();
	but6_off.src = "./images/but6_off.jpg";
	
	but7 = new Image();
	but7_on = new Image();
	but7_on.src = "./images/but7_on.jpg";		
	but7_off = new Image();
	but7_off.src = "./images/but7_off.jpg";
}