function writeCookie(name, ID, pro_name, num, pro_no, pro_pic)
{
  var test=false;
  var values="," + escape(ID) + "#" + escape(pro_name) + "#" + escape(num) + "#" + escape(pro_no)  + "#" + escape(pro_pic);
  var cookieValue = readCookie(name);
		sss=cookieValue.split(",")
		for (i=0;i<sss.length;i++){
		s=sss[i].split("#");
			for(j=0;j<s.length;j++){
				if(s[0]==ID)
				{
					cookieValue=cookieValue.replace(","+sss[i],"");
					nums=s[2];
					test=true;
					alert('You have order this products, just added number!');
					break;
				}
			}
		}
	if (test)
	{
		document.cookie = name + "=" + cookieValue+ "," + escape(ID) + "#" + escape(pro_name) + "#" + escape(parseInt(num)+parseInt(nums)) + "#" + escape(pro_no)  + "#" + escape(pro_pic);
		test=false;
	}
	else
	{
		document.cookie = name + "=" + cookieValue+values;
		alert ('Order success');
	}
	
}

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 = document.cookie.substring(offset, end)
    }
  }
  return cookieValue;
}