--- lib/OpenLayers/Handler/Drag.js	2007-05-29 14:38:24.000000000 +0200
+++ Drag.js	2007-08-14 13:03:47.000000000 +0200
@@ -77,7 +77,7 @@
             this.dragging = true;
             this.callback("move", [evt.xy]);
             if(!this.oldOnselectstart) {
-                this.oldOnselectstart = document.onselectstart;
+                this.oldOnselectstart = (document.onselectstart) ? document.onselectstart : function() { return true; };
                 document.onselectstart = function() {return false;}
             }
         }