function cart_item_change(mode, index)
{
  var formname = "item" + index;

  if(document.forms[formname].quantity.value.match(/[^0-9０-９]+/)){
    alert('Please enter the quantity.');
    return false;
  }
  
  if((document.forms[formname].quantity.value==0)||document.forms[formname].quantity.value=="０"){
    mode=0;
  }
  
  if(mode==0){
		document.forms[formname].mode.value=mode;
		document.forms[formname].submit();
  }else{
	  document.forms[formname].mode.value=mode;
	  document.forms[formname].submit();
  }
 
}

function delivery_change(formName, compName, changeName, changeVal)
{
  var obj;
  obj = document.forms[formName].elements[compName];
  if (obj != null && obj.value != "")
  {
    document.forms[formName].elements[changeName][changeVal].checked = true;
  }
  return false;
}