Index: ssts-web/src/main/webapp/js/common.js
===================================================================
diff -u -r12606 -r12966
--- ssts-web/src/main/webapp/js/common.js	(.../common.js)	(revision 12606)
+++ ssts-web/src/main/webapp/js/common.js	(.../common.js)	(revision 12966)
@@ -306,11 +306,17 @@
 }
 
 function compareDate(beginDate, endDate){
-  var d1 = new Date(beginDate.replace(/-/g, "/"));
-  var d2 = new Date(endDate.replace(/-/g, "/"));
-  if( (d1 - d2) >0 )
-    return false;
-  return true;
+	var d1 = beginDate;
+	if(!(beginDate instanceof Date)){
+		d1 = new Date(beginDate.replace(/-/g, "/"));
+	}
+	var d2 = endDate;
+	if(!(endDate instanceof Date)){
+		d2 = new Date(endDate.replace(/-/g, "/"));
+	}
+	if( (d1 - d2) >0 )
+		return false;
+	return true;
 }