diff --git a/4chan_x.js b/4chan_x.js
index 056ab67d5..18f5079c0 100644
--- a/4chan_x.js
+++ b/4chan_x.js
@@ -179,6 +179,7 @@
     move: function(e) {
       var el, rect;
       ui.el = el = e.target.parentNode;
+      document.body.className = 'noselect';
       rect = el.getBoundingClientRect();
       ui.dx = e.clientX - rect.left;
       ui.dy = e.clientY - rect.top;
@@ -216,7 +217,8 @@
       el = ui.el;
       id = el.id;
       localStorage["" + id + "Left"] = el.style.left;
-      return localStorage["" + id + "Top"] = el.style.top;
+      localStorage["" + id + "Top"] = el.style.top;
+      return document.body.className = '';
     }
   };
   d = document;
@@ -2237,6 +2239,14 @@
       #watcher > div:last-child {\
         padding: 0 5px 5px 5px;\
       }\
+\
+      body.noselect {\
+        -webkit-user-select: none;\
+        -khtml-user-select: none;\
+        -moz-user-select: none;\
+        -o-user-select: none;\
+        user-select: none;\
+      }\
     '
   };
   main.init();
diff --git a/script.coffee b/script.coffee
index 7572257ed..366389f94 100644
--- a/script.coffee
+++ b/script.coffee
@@ -98,6 +98,7 @@ ui =
     el
   move: (e) ->
     ui.el = el = e.target.parentNode
+    document.body.className = 'noselect'
     #distance from pointer to el edge is constant; calculate it here.
     # XXX opera reports el.offsetLeft / el.offsetTop as 0
     rect = el.getBoundingClientRect()
@@ -129,6 +130,7 @@ ui =
     {id} = el
     localStorage["#{id}Left"] = el.style.left
     localStorage["#{id}Top"]  = el.style.top
+    document.body.className = ''
 
 #convenience
 d = document
@@ -1757,6 +1759,14 @@ main =
       #watcher > div:last-child {
         padding: 0 5px 5px 5px;
       }
+
+      body.noselect {
+        -webkit-user-select: none;
+        -khtml-user-select: none;
+        -moz-user-select: none;
+        -o-user-select: none;
+        user-select: none;
+      }
     '
 
 main.init()