function showgoods1(str)
{
	var a=str;
		switch(a)
	{
		case "1_1":
		document.getElementById("1_1").style.display="block";
		document.getElementById("1_2").style.display="none";
		document.getElementById("1_3").style.display="none";
		//document.getElementById("m1").className="m1";
		break;
		case "1_2":
		document.getElementById("1_1").style.display="none";
		document.getElementById("1_2").style.display="block";
		document.getElementById("1_3").style.display="none";
		//document.getElementById("m1").className="m2";
		break;
		case "1_3":
		document.getElementById("1_1").style.display="none";
		document.getElementById("1_2").style.display="none";
		document.getElementById("1_3").style.display="block";
		//document.getElementById("m1").className="m3";
		break;
		case "2_1":
		document.getElementById("2_1").style.display="block";
		document.getElementById("2_2").style.display="none";
		document.getElementById("2_3").style.display="none";
		//document.getElementById("2_4").style.display="none";
		//document.getElementById("m2").className="m1";
		break;
		case "2_2":
		document.getElementById("2_1").style.display="none";
		document.getElementById("2_2").style.display="block";
		document.getElementById("2_3").style.display="none";
		//document.getElementById("2_4").style.display="none";
		//document.getElementById("m2").className="m2";
		break;
		case "2_3":
		document.getElementById("2_1").style.display="none";
		document.getElementById("2_2").style.display="none";
		document.getElementById("2_3").style.display="block";
		//document.getElementById("2_4").style.display="none";
		//document.getElementById("m2").className="m3";
		break;
		case "2_4":
		document.getElementById("2_1").style.display="none";
		document.getElementById("2_2").style.display="none";
		document.getElementById("2_3").style.display="none";
		//document.getElementById("2_4").style.display="block";
		//document.getElementById("m2").className="m4";
		break;
		case "3_1":
		document.getElementById("3_1").style.display="block";
		document.getElementById("3_2").style.display="none";
		document.getElementById("3_3").style.display="none";
		//document.getElementById("3_4").style.display="none";
		//document.getElementById("c1").className="c1";
		break;
		case "3_2":
		document.getElementById("3_1").style.display="none";
		document.getElementById("3_2").style.display="block";
		document.getElementById("3_3").style.display="none";
		//document.getElementById("3_4").style.display="none";
		//document.getElementById("c1").className="c2";
		break;
		case "3_3":
		document.getElementById("3_1").style.display="none";
		document.getElementById("3_2").style.display="none";
		document.getElementById("3_3").style.display="block";
		//document.getElementById("3_4").style.display="none";
		//document.getElementById("c1").className="c3";
		break;
		case "3_4":
		document.getElementById("3_1").style.display="none";
		document.getElementById("3_2").style.display="none";
		document.getElementById("3_3").style.display="none";
		//document.getElementById("3_4").style.display="block";
		//document.getElementById("c1").className="c4";
		break;
		case "4_1":
		document.getElementById("4_1").style.display="block";
		document.getElementById("4_2").style.display="none";
		document.getElementById("4_3").style.display="none";
		//document.getElementById("4_4").style.display="none";
		//document.getElementById("g1").className="g1";
		break;
		case "4_2":
		document.getElementById("4_1").style.display="none";
		document.getElementById("4_2").style.display="block";
		document.getElementById("4_3").style.display="none";
		//document.getElementById("4_4").style.display="none";
		//document.getElementById("g1").className="g2";
		break;
		case "4_3":
		document.getElementById("4_1").style.display="none";
		document.getElementById("4_2").style.display="none";
		document.getElementById("4_3").style.display="block";
		//document.getElementById("4_4").style.display="none";
		//document.getElementById("g1").className="g3";
		break;
		case "4_4":
		document.getElementById("4_1").style.display="none";
		document.getElementById("4_2").style.display="none";
		document.getElementById("4_3").style.display="none";
		//document.getElementById("4_4").style.display="block";
		//document.getElementById("g1").className="g4";
		break;
	}

}