diff --git a/lib/OpenLayers/Control/MouseDefaults.js b/lib/OpenLayers/Control/MouseDefaults.js
index e7dc1d61cc..9ce026342c 100644
--- a/lib/OpenLayers/Control/MouseDefaults.js
+++ b/lib/OpenLayers/Control/MouseDefaults.js
@@ -55,6 +55,7 @@ OpenLayers.Control.MouseDefaults.prototype =
             this.zoomBox.style.zIndex = this.map.Z_INDEX_BASE["Popup"] - 1;
             this.map.viewPortDiv.appendChild(this.zoomBox);
         }
+        document.onselectstart=function() { return false; }
         Event.stop(evt);
     },
 
@@ -111,6 +112,7 @@ OpenLayers.Control.MouseDefaults.prototype =
         } else {
             this.map.setCenter(this.map.center);
         }
+        document.onselectstart=null;
         this.mouseDragStart = null;
         this.map.div.style.cursor = "default";
     },
diff --git a/lib/OpenLayers/Control/MouseToolbar.js b/lib/OpenLayers/Control/MouseToolbar.js
index 056e56868f..e0afdd527b 100644
--- a/lib/OpenLayers/Control/MouseToolbar.js
+++ b/lib/OpenLayers/Control/MouseToolbar.js
@@ -164,6 +164,7 @@ OpenLayers.Control.MouseToolbar.prototype =
                 this.map.div.style.cursor = "move";
                 break;
         }
+        document.onselectstart = function() { return false; } 
         Event.stop(evt);
     },
 
@@ -247,6 +248,7 @@ OpenLayers.Control.MouseToolbar.prototype =
                 this.map.setCenter(this.map.center);
             
         }
+        document.onselectstart = null;
         this.mouseDragStart = null;
         this.map.div.style.cursor = "default";
     },