diff --git a/content/treestyletab/treestyletab.js b/content/treestyletab/treestyletab.js
index d0235179..c946dc88 100644
--- a/content/treestyletab/treestyletab.js
+++ b/content/treestyletab/treestyletab.js
@@ -45,6 +45,7 @@ var TreeStyleTabService = {
 	kACTION_STAY      : 2,
 	kACTION_DUPLICATE : 4,
 	kACTION_IMPORT    : 8,
+	kACTION_NEWTAB    : 16,
 	kACTION_ATTACH    : 1024,
 	kACTION_PART      : 2048,
 	kACTIONS_FOR_SOURCE      : 1 | 2,
diff --git a/content/treestyletab/treestyletabbrowser.js b/content/treestyletab/treestyletabbrowser.js
index 87e3fb3c..cdce5092 100644
--- a/content/treestyletab/treestyletabbrowser.js
+++ b/content/treestyletab/treestyletabbrowser.js
@@ -1951,7 +1951,12 @@ TreeStyleTabBrowser.prototype = {
  
 	canDrop : function(aEvent, aDragSession) 
 	{
-		return this.getDropAction(aEvent, aDragSession).canDrop;
+		var dropAction = this.getDropAction(aEvent, aDragSession);
+		if ('dataTransfer' in aEvent && dropAction.action & this.kACTION_NEWTAB) {
+			var dt = aEvent.dataTransfer;
+			dt.effectAllowed = dt.dropEffect = 'link';
+		}
+		return dropAction.canDrop;
 	},
  
 	getSupportedFlavours : function() 
@@ -2035,9 +2040,11 @@ TreeStyleTabBrowser.prototype = {
 			};
 
 		var isTabMoveFromOtherWindow = aSourceTab && aSourceTab.ownerDocument != document;
+		var isNewTabAction = !aSourceTab || aSourceTab.ownerDocument != document;
 
 		if (tab.localName != 'tab') {
 			var action = isTabMoveFromOtherWindow ? this.kACTION_STAY : (this.kACTION_MOVE | this.kACTION_PART) ;
+			if (isNewTabAction) action |= this.kACTION_NEWTAB;
 			if (aEvent[this.positionProp] < tabs[0].boxObject[this.positionProp]) {
 				info.target   = info.parent = info.insertBefore = tabs[0];
 				info.position = isInverted ? this.kDROP_AFTER : this.kDROP_BEFORE ;
@@ -2133,6 +2140,8 @@ TreeStyleTabBrowser.prototype = {
 				break;
 		}
 
+		if (isNewTabAction) action |= this.kACTION_NEWTAB;
+
 		return info;
 	},