diff --git a/copyparty/web/up2k.js b/copyparty/web/up2k.js
index 64ae4d81..855fcdba 100644
--- a/copyparty/web/up2k.js
+++ b/copyparty/web/up2k.js
@@ -746,14 +746,10 @@ function up2k_init(have_crypto) {
     }
 
     var tasker = (function () {
-        var mutex = false,
+        var tto = null,
             was_busy = false;
 
         function taskerd() {
-            if (mutex)
-                return;
-
-            mutex = true;
             while (true) {
                 var is_busy = 0 !=
                     st.todo.hash.length +
@@ -775,8 +771,8 @@ function up2k_init(have_crypto) {
                         var now = new Date().getTime();
                         flag.take(now);
                         if (!flag.ours) {
-                            setTimeout(taskerd, 100);
-                            mutex = false;
+                            clearTimeout(tto);
+                            tto = setTimeout(taskerd, 100);
                             return;
                         }
                     }
@@ -821,8 +817,8 @@ function up2k_init(have_crypto) {
                 }
 
                 if (!mou_ikkai) {
-                    setTimeout(taskerd, 100);
-                    mutex = false;
+                    clearTimeout(tto);
+                    tto = setTimeout(taskerd, 100);
                     return;
                 }
             }
diff --git a/copyparty/web/upload.css b/copyparty/web/upload.css
index 6be33351..b21cc931 100644
--- a/copyparty/web/upload.css
+++ b/copyparty/web/upload.css
@@ -90,8 +90,10 @@
 	background: #222;
 }
 #u2cards {
-	margin: 2.5em auto -2.5em auto;
+	padding: 1em 0 .2em 0;
+	margin: 1.5em auto -2.5em auto;
 	text-align: center;
+	overflow: hidden;
 }
 #u2cards.w {
 	width: 45em;
@@ -110,12 +112,12 @@
 	border-radius: 0 .4em 0 0;
 }
 #u2cards a.act {
-	border-width: 1px 1px 0 1px;
+	border-width: 1px;
 	border-radius: .3em .3em 0 0;
 	margin-left: -1px;
 	background: linear-gradient(to bottom, #454, #333);
-	box-shadow: 0 -.2em .19em #380;
-	border-color: #7c5 #583 #000 #583;
+	box-shadow: 0 -.17em .67em #280;
+	border-color: #7c5 #583 #333 #583;
 	position: relative;
 	color: #fd7;
 }
@@ -260,8 +262,10 @@ html.light #u2cards a {
 	background: linear-gradient(to bottom, #eee, #fff);
 }
 html.light #u2cards a.act {
-	background: inherit;
 	color: #037;
+	background: inherit;
+	box-shadow: 0 -.17em .67em #0ad;
+	border-color: #09c #05a #eee #05a;
 }
 html.light #u2conf .txtbox {
 	background: #fff;