diff --git a/admin/tours_assignments.php b/admin/tours_assignments.php
index 9701f0b..a8f16d5 100644
--- a/admin/tours_assignments.php
+++ b/admin/tours_assignments.php
@@ -88,6 +88,7 @@
                         );
 ?>
 <script language="javascript" type="text/javascript">
+var infowindow = '';
 function addbuttonclicked(id)
 {
 	document.forms.tours.action.value="add";
@@ -102,10 +103,11 @@ function openinfo(id)
 	else
 		currentid=document.forms.tours["studentlist[]"].options[document.forms.tours["studentlist[]"].selectedIndex].value;
 
-	window.open("tours_assignments.php?action=info&id="+currentid,"Student Tour Rank Information","location=no,menubar=no,directories=no,toolbar=no,width=770,height=300,scrollbars=yes"); 
+	infowindow = window.open("tours_assignments.php?action=info&id="+currentid,"Student Tour Rank Information","location=no,menubar=no,directories=no,toolbar=no,width=770,height=300,scrollbars=yes"); 
 	return false;
 
 }
+
 function switchinfo()
 {
 	if(document.forms.tours["studentlist[]"].selectedIndex != -1)
@@ -115,7 +117,10 @@ function switchinfo()
 
 		document.forms.tours.studentinfobutton.disabled=false;
 		document.forms.tours.studentinfobutton.value=currentname;
-		openinfo();
+
+		if(!infowindow.closed && infowindow.location) {
+			openinfo();
+		}
 	}
 	else
 	{