function newImage(arg)
{
    rslt = new Image();
    rslt.src = arg;
    return rslt;
}

function bOver(image)
{
    document[image].src = eval(image +"_over.src");
}

function bOut(image)
{
    document[image].src = eval(image +"_out.src");
}

// Œ¤‹†_Á‰ģŠĮ
b01_out  = newImage('images/button01.png');
b01_over = newImage('images/buttonover01.png');

// Œ¤‹†_“û‘B
b02_out  = newImage('images/button02.png');
b02_over = newImage('images/buttonover02.png');

// Œ¤‹†_ŠĖ’_äX
b03_out  = newImage('images/button03.png');
b03_over = newImage('images/buttonover03.png');

// Œ¤‹†_äBE–å–Ŧ
b04_out  = newImage('images/button04.png');
b04_over = newImage('images/buttonover04.png');

// Œ¤‹†_ŒÄ‹zŠí
b05_out  = newImage('images/button05.png');
b05_over = newImage('images/buttonover05.png');

// Œ¤‹†_ŒŒŠĮ
b06_out  = newImage('images/button06.png');
b06_over = newImage('images/buttonover06.png');

// Œ¤‹†_ˆÚA
b07_out  = newImage('images/button07.png');
b07_over = newImage('images/buttonover07.png');

// Œ¤‹†_‚Ē‚ņ•ĒŽq•a‘ÔŠw
b11_out  = newImage('images/button11.png');
b11_over = newImage('images/buttonover11.png');

// Œ¤‹†_‚Ē‚ņæ’[ˆã—Éž—pŠw
b12_out  = newImage('images/button12.png');
b12_over = newImage('images/buttonover12.png');