Index: lams_tool_spreadsheet/web/includes/javascript/rsrcspreadsheetitem.js
===================================================================
RCS file: /usr/local/cvsroot/lams_tool_spreadsheet/web/includes/javascript/rsrcspreadsheetitem.js,v
diff -u -r1.2 -r1.3
--- lams_tool_spreadsheet/web/includes/javascript/rsrcspreadsheetitem.js	23 Jul 2013 17:54:12 -0000	1.2
+++ lams_tool_spreadsheet/web/includes/javascript/rsrcspreadsheetitem.js	26 Jul 2013 13:16:44 -0000	1.3
@@ -110,8 +110,13 @@
 		// then refresh "basic tab" spreadsheetlist and close this window.
 	}
 	function cancelSpreadsheetItem(){
-		var win = window.hideMessage ? window : window.top;
-		if (win.hideMessage != null){
-			win.hideMessage();
+		var win = null;
+		if (window.hideMessage) { 
+			win = window;
+		} else if (window.parent && window.parent.hideMessage) {
+			win = window.parent;
+		} else {
+			win = window.top;
 		}
+		win.hideMessage();
 	}
\ No newline at end of file