img61on = new Image();
        img61on.src ='images/bu1b.jpg';
        img61off = new Image();
        img61off.src ='images/bu1.jpg';
        img62on = new Image();
        img62on.src ='images/bu2b.jpg';
        img62off = new Image();
        img62off.src ='images/bu2.jpg';
        img63on = new Image();
        img63on.src ='images/bu3b.jpg';
        img63off = new Image();
        img63off.src ='images/bu3.jpg';
        img64on = new Image();
        img64on.src ='images/bu4b.jpg';
        img64off = new Image();
        img64off.src ='images/bu4.jpg';
        img65on = new Image();
        img65on.src ='images/bu5b.jpg';
        img65off = new Image();
        img65off.src ='images/bu5.jpg';
        img66on = new Image();
        img66on.src ='images/bu6b.jpg';
        img66off = new Image();
        img66off.src ='images/bu6.jpg';
        img67on = new Image();
        img67on.src ='images/bu7b.jpg';
        img67off = new Image();
        img67off.src ='images/bu7.jpg';
        img68on = new Image();
        img68on.src ='images/bu8b.jpg';
        img68off = new Image();
        img68off.src ='images/bu8.jpg';
        
        img1on = new Image();
        img1on.src ='images/b1b.jpg';
        img1off = new Image();
        img1off.src ='images/b1.jpg';
        img2on = new Image();
        img2on.src ='images/b2b.jpg';
        img2off = new Image();
        img2off.src ='images/b2.jpg';
        img3on = new Image();
        img3on.src ='images/b3b.jpg';
        img3off = new Image();   
        img3off.src ='images/b3.jpg';
        img4on = new Image();
        img4on.src ='images/b4b.jpg';
        img4off = new Image();   
        img4off.src ='images/b4.jpg';
        img5on = new Image();  
        img5on.src ='images/b5b.jpg';
        img5off = new Image();   
        img5off.src ='images/b5.jpg';
        img6on = new Image();
        img6on.src ='images/b6b.jpg';
        img6off = new Image();   
        img6off.src ='images/b6.jpg';
        img7on = new Image();
        img7on.src ='images/b7b.jpg';
        img7off = new Image();
        img7off.src ='images/b7.jpg';
        img8on = new Image();
        img8on.src ='images/b8b.jpg';
        img8off = new Image();
        img8off.src ='images/b8.jpg';
        img9on = new Image();
        img9on.src ='images/b9b.jpg';
        img9off = new Image();
        img9off.src ='images/b9.jpg';
        img10on = new Image();
        img10on.src ='images/b10b.jpg';
        img10off = new Image();
        img10off.src ='images/b10.jpg';
        
function imgOn(imgName) 
	{
        document[imgName].src = eval(imgName + 'on.src');
	}

function imgOff(imgName) 
	{
        document[imgName].src = eval(imgName + 'off.src');
	}