anchor.diff:          dropZone.select('.marker')[0].update(draggedMarker.innerHTML);
   
           //FOR IE7 - Have to comment this part, since X is not working after being added to the row once. The Draggables doesn't register clone properly...
  -        
  +
           // Have to clone the node to avoid the revert animation
  -//        var draggedMarkerParent = draggedMarker.parentNode
  -//        draggedMarkerParent.removeChild(draggedMarker);
  -//        if (draggedMarker.hasClassName('new-marker')) {
  -//            var clone = $(draggedMarker.cloneNode(true))
  -//            clone.style.position = ''
  -//            clone.style.top = ''
  -//            clone.style.left = ''
  -//            clone.style.zIndex = ''
  -//            clone.style.opacity = '0'
  -//            new Draggable(clone, { revert: true })
  -//            registerNewMarkerHoverTip(clone)
  -//            draggedMarkerParent.appendChild(clone);
  -//            new Effect.Opacity(clone, {
  -//                duration: 0.8
  -//            })
  -//        }
  +        //        var draggedMarkerParent = draggedMarker.parentNode
  +        //        draggedMarkerParent.removeChild(draggedMarker);
  +        //        if (draggedMarker.hasClassName('new-marker')) {
  +        //            var clone = $(draggedMarker.cloneNode(true))
  +        //            clone.style.position = ''
  +        //            clone.style.top = ''
  +        //            clone.style.left = ''
  +        //            clone.style.zIndex = ''
  +        //            clone.style.opacity = '0'
  +        //            new Draggable(clone, { revert: true })
  +        //            registerNewMarkerHoverTip(clone)
  +        //            draggedMarkerParent.appendChild(clone);
  +        //            new Effect.Opacity(clone, {
  +        //                duration: 0.8
  +        //            })
  +        //        }
       }
   }
   
  
positive.code: <%@ taglib prefix="tags" tagdir="/WEB-INF/tags" %>
  <%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
  <%@taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %>
  <%@taglib prefix="form" uri="http://www.springframework.org/tags/form"%>
  <%@taglib prefix="commons" uri="http://bioinformatics.northwestern.edu/taglibs/commons"%>
  <%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
  <%@ taglib prefix="laf" uri="http://gforge.nci.nih.gov/projects/ctmscommons/taglibs/laf" %>
  <%@taglib prefix="templ" tagdir="/WEB-INF/tags/template"%>
  <html>
  <head>
  <title>Set up ${period.displayName} of ${studySegment.qualifiedName} in ${study.name}</title>
  <tags:includeScriptaculous/>
  <tags:stylesheetLink name="main"/>
  <script type="text/javascript">
  function currentActivityCount() {
      return $$('.input-row').length;
  }
  
  function selectedActivity() {
      return selectedValue('add-activity')
  
negative.code: function clearHoverTip() {
      $('palette-tip').innerHTML = '&nbsp;'
  }
  
  function registerHoverTip(element, message) {
      element.observe('mouseover', function() {
          $('palette-tip').innerHTML = message
      })
      element.observe('mouseout', clearHoverTip)
  }
  
  