.button a {
	width: 288px;
	height: 47px;
	display: block;
}
.button a.button_home {
	background: url("images/side-menu-buttons.jpg") 0px 0px no-repeat;
}
.button a.button_home:hover {
	background: url("images/side-menu-buttons.jpg") 0px -47px no-repeat;
}
.button a.button_who-we-are {
	background: url("images/side-menu-buttons.jpg") 0px -94px no-repeat;
}
.button a.button_who-we-are:hover {
	background: url("images/side-menu-buttons.jpg") 0px -141px no-repeat;
}
.button a.button_products {
	background: url("images/side-menu-buttons.jpg") 0px -188px no-repeat;
}
.button a.button_products:hover {
	background: url("images/side-menu-buttons.jpg") 0px -235px no-repeat;
}
.button a.button_green-products {
	background: url("images/side-menu-buttons.jpg") 0px -282px no-repeat;
}
.button a.button_green-products:hover {
	background: url("images/side-menu-buttons.jpg") 0px -329px no-repeat;
}
.button a.button_industries {
	background: url("images/side-menu-buttons.jpg") 0px -376px no-repeat;
}
.button a.button_industries:hover {
	background: url("images/side-menu-buttons.jpg") 0px -423px no-repeat;
}
.button a.button_contact-us {
	background: url("images/side-menu-buttons.jpg") 0px -470px no-repeat;
}
.button a.button_contact-us:hover {
	background: url("images/side-menu-buttons.jpg") 0px -517px no-repeat;
}

.button_02 a {
	width: 288px;
	height: 57px;
	display: block;
}
.button_02 a.button_useful-tips {
	background: url("images/useful-tips.jpg") 0px 0px no-repeat;
}
.button_02 a.button_useful-tips:hover {
	background: url("images/useful-tips.jpg") 0px -57px no-repeat;
}