// --- 设置cookie
 function setCookie(sName,sValue,expireHours) {
  var cookieString = sName + "=" + escape(sValue);
  //;判断是否设置过期时间
  if (expireHours>0) {
    var date = new Date();
    date.setTime(date.getTime + expireHours * 3600 * 1000);
    cookieString = cookieString + "; expire=" + date.toGMTString();
  }
  document.cookie = cookieString;
 }
 
 //--- 获取cookie
 function getCookie(sName) {
   var aCookie = document.cookie.split("; ");
   for (var j=0; j < aCookie.length; j++){
  var aCrumb = aCookie[j].split("=");
  if (escape(sName) == aCrumb[0])
    return unescape(aCrumb[1]);
   }
   return null;
 }
 
function ShowFLT(i) {
   var lbmc = document.getElementById(i);
   if (lbmc.style.display != "block") {
     lbmc.style.display = "block";
     setCookie("show_item","block");
    }
    else {
     lbmc.style.display = "none";
     setCookie("show_item","none");
    }
    //if (lbmc.style.display == 'none') {
    //    lbmc.style.display = '';
    //}
    //else {
    //   lbmc.style.display = 'none';
    //}
    }