.lt {
	background: url(../images/bg_lt.gif) 0 0 no-repeat; padding: 0 0 0 150px;
}

.rt {
	background: url(../images/bg_rt.gif) 100% 0 no-repeat; padding: 120px 150px 0 0;
}

.lb {
	background: url(../images/bg_lb.gif) 0 100% no-repeat; padding: 0 0 0 0;
}

.rb {
	background: url(../images/bg_rb.gif) 100% 100% no-repeat; padding: 0 0 100px 0;
}