.box{
	position:relative;
}
	ins.t,ins.f,ins.b,ins.r,ins.l{
		display:block;
	}
	ins.t,ins.f{
		position:relative;
		height:20px;
	}
	ins.l, ins.r{
		position:absolute;	
		width:50%;
		height:100%;
	}
	ins.b{
		background-image:url(/images/bg_box1.png);
		background-repeat:no-repeat;
	}
	.box .t {}
		.box .t ins.l{
			left:0;
			top:0;
			background-position:top left;
		}
		.box .t ins.r{
			right:0;
			top:0;
			background-position:top right;
		}
	.box .m {
		position:relative;
		height:auto;
	}
		.box .m ins.l{
			left:0;
			top:0;
			background-position:0 -20px;
		}
		.box .m ins.r{
			left:50%;
			top:0;
			background-position:100% -20px;
		}
		.box .m div.c{
			position:relative;
			padding:0 15px;
		}
		
	.box .f {}
		.box .f ins.l{
			left:0;
			top:0;
			background-position:bottom left;
		}
		.box .f ins.r{
			left:50%;
			top:0;
			background-position:bottom right;
		}