<script language="javascript">
//檢測貨號是否正確
function checkGoods_ID(obj)
{
	var Goods_ID=trim(obj.value);

	var Goods_IDRight4=Goods_ID.substring(5,6);
	var Goods_IDLeft2=Goods_ID.substring(1,2);
if(Goods_ID.length==9)
{
	if((Goods_IDRight4=="1" || Goods_IDRight4=="2" || Goods_IDRight4=="3" || Goods_IDRight4=="7" || Goods_IDRight4=="9") && (Goods_IDLeft2.toUpperCase()=="L" || Goods_IDLeft2.toUpperCase()=="M"))
  	{}
  	else if((Goods_IDRight4=="4" && Goods_IDLeft2.toUpperCase()=="L") || ((Goods_IDRight4=="5" || Goods_IDRight4=="6") && Goods_IDLeft2.toUpperCase()=="L"))
    {}
    else if((Goods_IDRight4=="5" || Goods_IDRight4=="6") && Goods_IDLeft2.toUpperCase()=="M")
    {}
	else{alert("您輸入的貨號有錯誤，請按規則輸入");obj.focus();}
}
else{alert("您輸入的貨號不是9位，請按規則輸入");obj.focus();}
	obj.value=Goods_ID;
}
</script>