В каждый стиль ставим (style1, style2 и т.д.):
Code
input[type=button] {background:url('/images/input-button-bg.png') #131313 repeat-x;padding:0 2px;border:1px solid #171717;cursor:pointer;line-height:20px;height:20px;overflow:visible;outline:none;margin:0;-webkit-border-radius:3px;border-radius:3px;font-size:9px;color:#8C8E91;}
input[type=button]:hover{background:url('/images/input-button-bg-hover.png') #212121 repeat-x;text-shadow:0 -1px 0 #000000;color:#FFFFFF;}
Code
input[type=button] {background:url('/images/input-button-bg2.png') #131313 repeat-x;padding:0 2px;border:1px solid #666;cursor:pointer;line-height:20px;height:20px;overflow:visible;outline:none;margin:0;-webkit-border-radius:3px;border-radius:3px;font-size:9px;color:#000;}
input[type=button]:hover{background:url('/images/input-button-bg-hover2.png') #212121 repeat-x;text-shadow:0 -1px 0 #000000;color:#FFFFFF;}
Code
input[type=button] {background:url('/images/input-button-bg.png') #131313 repeat-x;padding:0 2px;border:1px solid #171717;cursor:pointer;line-height:20px;height:20px;overflow:visible;outline:none;margin:0;-webkit-border-radius:3px;border-radius:3px;font-size:9px;color:#666;}
input[type=button]:hover{background:url('/images/input-button-bg-hover3.png') #212121 repeat-x;text-shadow:0 -1px 0 #000000;color:#FFFFFF;}
Code
input[type=button] {background:url('/images/input-button-bg2.png') #131313 repeat-x;padding:0 2px;border:1px solid #666;cursor:pointer;line-height:20px;height:20px;overflow:visible;outline:none;margin:0;-webkit-border-radius:3px;border-radius:3px;font-size:9px;color:#000;}
input[type=button]:hover{background:url('/images/input-button-bg-hover4.png') #212121 repeat-x;text-shadow:0 -1px 0 #000000;color:#FFFFFF;}
Code
input[type=button] {background:url('/images/input-button-bg2.png') #131313 repeat-x;padding:0 2px;border:1px solid #666;cursor:pointer;line-height:20px;height:20px;overflow:visible;outline:none;margin:0;-webkit-border-radius:3px;border-radius:3px;font-size:9px;color:#000;}
input[type=button]:hover{background:url('/images/input-button-bg-hover2.png') #212121 repeat-x;text-shadow:0 -1px 0 #000000;color:#FFFFFF;}
Code
input[type=button] {background:url('/images/input-button-bg2.png') #131313 repeat-x;padding:0 2px;border:1px solid #666;cursor:pointer;line-height:20px;height:20px;overflow:visible;outline:none;margin:0;-webkit-border-radius:3px;border-radius:3px;font-size:9px;color:#000;}
input[type=button]:hover{background:url('/images/input-button-bg-hover.png') #212121 repeat-x;text-shadow:0 -1px 0 #000000;color:#FFFFFF;}
P.S. сам не проверял, но работать должно.
Картинки заливаем в /images/
Источник: http://sevensoft.3dn.ru/
