STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. open the following url with java console open:
http://sqeweb/jsn/users/fred/deployment_ws/fred/deployment_6_UR_int_ws/deployment/src/plugin/FunctionalTest/FunctionalTest/html/StyleSheetTest.html

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No exception will be printed in console and string "@@@@ all test passed" will be printed.
ACTUAL -
works well on firefox.
The following string is printed on ie:
#### MediaList object is null
#### MediaList object for link stylesheet is null
#### test failed

REPRODUCIBILITY :
This bug can be reproduced always.

The applet source code is:
http://sqeweb/jsn/users/fred/deployment_ws/fred/deployment_6_UR_int_ws/deployment/src/plugin/FunctionalTest/FunctionalTest/src/StyleSheetTest.java