function writeCookie(name, value1, value2, value3, value4)
{
	var NewWindow;
	var car_str=readCookie(name);
	var kkk=car_str.indexOf(","+value1);
	if (kkk == -1)
 	{document.cookie = name + "=" + readCookie(name) + "," + escape(value1) + "_" + escape(value2) + "_" + escape(value3) + "_" + escape(value4);
	}
	else
	{alert("该物品已经在您的购物车中。");}
	NewWindow=window.open("mycar.asp","thiisxyscar","resizable=yes,status=no;menubar=no,toolbar=no,scrollbars=yes");
	NewWindow.moveTo(150,100);
	NewWindow.focus();
}

function readCookie(name)

{

  var cookieValue = "";

  var search = name + "=";

  if(document.cookie.length > 0)

  { 

    offset = document.cookie.indexOf(search);

    if (offset != -1)

    { 

      offset += search.length;

      end = document.cookie.indexOf(";", offset);

      if (end == -1) end = document.cookie.length;

      cookieValue = unescape(document.cookie.substring(offset, end))

    }

  }

  return cookieValue;

}

function stringToInteger (inputString)

{

  return parseInt(inputString);

}

function isNotaNumber (inputString)

{

  return isNaN(inputString);

}

function UpdateCookie(name, value)

{

  var vvv="";
  vvv=readCookie(name);
  vvv=vvv.replace(','+value,"");
  document.cookie = name + "=" + vvv;

}

function ModifyCookie(name, valuex, value1, value2, value3, value4)

{

  var vvv="";
  vvv=readCookie(name);
  vvv=vvv.replace(','+valuex,"");
  document.cookie = name + "=" + vvv + "," + escape(value1) + "_" + escape(value2) + "_" + escape(value3) + "_" + escape(value4);

}