修改标题

@@ -76,7 +76,8 @@ $(function() {
 					$('#shareImg').val(data.shareImg);
 					$('#shareLink').val(data.shareLink);
 					$('#activityCode').val(data.activityCode);
-					$('#getCoupon').html(data.title);
+					$(document).attr("title",data.title);
+
 					$('.gain-coupon-centent .use-coupon-btn .use-coupon').attr('href', data.buttonLink);
 					$('.gain-coupon-centent .go-wep').attr('href', data.pcLink);
 					$('.tip .title').html(data.message);