增加 fontsize判断

@@ -218,6 +218,21 @@ exports.getMktcBySeo = function() {
     return mktc;
 }
 
+exports.setFontSize = function() {
+    var e = document.documentElement;
+    if (!e.style.fontSize) {
+        var f = e.clientWidth;
+        if (!f) {
+            return
+        }
+        if (f >= 640) {
+            e.style.fontSize = "40px";
+        } else {
+            e.style.fontSize = 40 * (f / 640) + "px";
+        }
+    }
+}
+
 exports.getDownloadStr = function(isWechat, mktc) {
     var str = '<div class="top-downloadbar" id="top-downloadbar"><a href="javascript:void(0);" class="download-close" id="download-close"></a>\
     <span class="download-icon"></span><span class="download-text">Yoho!Buy有货</span>';

@@ -355,7 +355,7 @@ function getMktc() {
 }
 
 function setUnionType() {
-    var mktc =  window.qs.mkt_code || window.qs.union_type;
+    var mktc =  window.qs.mkt_code || window.qs.union_type || util.getMktcBySeo();
     if (mktc) {
       var aDom = document.getElementsByTagName("a"); //获取页面所有a标签
       for (var i = 0; i < aDom.length; i++) {
@@ -368,12 +368,13 @@ function setUnionType() {
 }
 
 function setDownloadBar() {
+  var nodownload = document.getElementById('no-download'); // 页面不需要下载条
   var downBar = document.getElementById('top-downloadbar');
   var blackCheck = downloadBlackLst.some(function(url) {
     return new RegExp(url, 'i').test(location.href);
   });
 
-  if (downBar || blackCheck) {
+  if (nodownload || downBar || blackCheck) {
     return;
   }
 
@@ -388,6 +389,9 @@ function setDownloadBar() {
       return;
     }
 
+    // 设定fontsize
+    util.setFontSize();
+
     var css =  require('../css/download.css')
     var downloadDom = document.createElement("div");
     downloadDom.innerHTML = util.getDownloadStr(isWechat);