diff --git a/contrib/js/reply.js b/contrib/js/reply.js
index 9d426d6..eadc1fc 100644
--- a/contrib/js/reply.js
+++ b/contrib/js/reply.js
@@ -387,9 +387,11 @@ function init(prefix) {
 
   $(rpl.elem).on("mousemove", function(ev) {
     if ($dragging) {
+      var x = ev.pageX - $(this).width() / 2,
+          y = ev.pageY - $(this).height() / 2;
       $dragging.offset({
-        top: ev.pageY,
-        left: ev.pageX
+        top: x,
+        left: y
       });
     }
   });
diff --git a/contrib/static/nntpchan.js b/contrib/static/nntpchan.js
index f979594..a51b831 100644
--- a/contrib/static/nntpchan.js
+++ b/contrib/static/nntpchan.js
@@ -691,7 +691,7 @@ parent.appendChild(wrapper);parent.backlink=false;},function(msg){var wrapper=do
 parent.backlink=true;}};parent.backlink=true;}
 function inject_hover_for_element(elem){var elems=elem.getElementsByClassName("backlink");var ls=[];var l=elems.length;for(var idx=0;idx<l;idx++){var e=elems[idx];ls.push(e);}
 for(var elem in ls){inject_hover(prefix,ls[elem]);}}
-function init(prefix){inject_hover_for_element(document);var rpl=getReplyTo();rpl.setPrefix(prefix);var e=rpl.elem;var mouseDownX,mouseDownY;var $dragging=null;$(rpl.elem).on("mousemove",function(ev){if($dragging){$dragging.offset({top:ev.pageY,left:ev.pageX});}});$(rpl.elem).on("mousedown",e,function(ev){$dragging=$(rpl.elem);});$(rpl.elem).on("mouseup",function(e){$dragging=null;});e=document.getElementById("postform_submit");var postit=function(){var f=document.querySelector("form");var r=getReplyTo();r.showMessage("posting... ");r.post(function(j){if(j.error){r.showError(j.error);}else{r.showMessage("posted :^)");r.updateCaptcha();r.clear();}},function(err){r.showError(err);r.clearSolution();});}
+function init(prefix){inject_hover_for_element(document);var rpl=getReplyTo();rpl.setPrefix(prefix);var e=rpl.elem;var mouseDownX,mouseDownY;var $dragging=null;$(rpl.elem).on("mousemove",function(ev){if($dragging){var x=ev.pageX-$(this).width()/2,y=ev.pageY-$(this).height()/2;$dragging.offset({top:x,left:y});}});$(rpl.elem).on("mousedown",e,function(ev){$dragging=$(rpl.elem);});$(rpl.elem).on("mouseup",function(e){$dragging=null;});e=document.getElementById("postform_submit");var postit=function(){var f=document.querySelector("form");var r=getReplyTo();r.showMessage("posting... ");r.post(function(j){if(j.error){r.showError(j.error);}else{r.showMessage("posted :^)");r.updateCaptcha();r.clear();}},function(err){r.showError(err);r.clearSolution();});}
 var f=document.querySelector("form");f.onsubmit=function(){postit();return false;}}
 /* local file: ./contrib/js/theme.js */
 function enable_theme(prefix,name){if(prefix&&name){var theme=document.getElementById("current_theme");if(theme){theme.href=prefix+"static/"+name+".css";var st=get_storage();st.nntpchan_prefix=prefix;st.nntpchan_theme=name;}}}