diff -r 54c0686efd85 -r 8da13562cfea src/js/widgets/tooltipWidget.js
--- a/src/js/widgets/tooltipWidget.js	Fri Nov 25 14:11:49 2011 +0100
+++ b/src/js/widgets/tooltipWidget.js	Fri Nov 25 15:14:19 2011 +0100
@@ -14,6 +14,10 @@
 
 };
 
+IriSP.TooltipWidget.prototype.clear = function() {
+	this.selector.find(".tiptext").text("");
+};
+
 IriSP.TooltipWidget.prototype.show = function(text, color, x, y) {
   if (this.selector.find(".tiptext").text() == text)
     return;
@@ -24,5 +28,6 @@
 };
 
 IriSP.TooltipWidget.prototype.hide = function() {
+  this.clear();
   this.selector.find(".tip").css("left", -10000).css("top", -100000);
-};
\ No newline at end of file
+};