用google分析统计锚点点击

var path = {
  product  : "/product_details/",
  shipping : "/shipping_packaging/",
  payment  : "/paymentterms/",
  feedback : "/feedback/"
}
// tabString是取tab的第一个小写单词，用来标识该tab
_gaq.push(['_setCookiePath', path[tabString]]);
_gaq.push(['_setAllowAnchor', true]);