diff --git a/index.html b/index.html
index cbb786a..02a3374 100644
--- a/index.html
+++ b/index.html
@@ -369,7 +369,7 @@ function fold_initial() {
   for(var i = 0; i < slides.length; i++) {
     var el = slides.item(i);
     var rect = el.getBoundingClientRect();
-    if (window.innerHeight < rect.top) {
+    if (window.innerHeight*1.5 < rect.top) {
       var name = el.id.replace("head_","");
       fold_content(name);
     }