<script language="javascript" type="text/javascript">
function goods_cut($val){
var num_val=document.getElementById('number'+$val);
var new_num=num_val.value;
if(isNaN(new_num)){alert('请输入数字');return false}
var Num = parseInt(new_num);
if(Num>1)Num=Num-1;
num_val.value=Num;
document.getElementById('updatecart').click();
}
function goods_add($val){
var num_val=document.getElementById('number'+$val);
var new_num=num_val.value;
if(isNaN(new_num)){alert('请输入数字');return false}
var Num = parseInt(new_num);
Num=Num+1;
num_val.value=Num;
document.getElementById('updatecart').click();
}
</script>