onmouseover="changeImages('index_Y01', 'images/index_Y01.gif'); return true;" onmouseout="changeImages('index_Y01', 'images/index_Y01.gif'); return true;" onmousedown="changeImages('index_Y01', 'images/index_Y01.gif'); return true;" onmouseup="changeImages('index_Y01', 'images/index_Y01.gif'); return true;">
