docs/jre/api/net have html files that have issues with HTML4 compliance

HTML files for this bug are from promoted build docs/jre/api/net and included in jar available at:
http://sqeweb.sfbay.sun.com/deployment2/sonali/AccessibiliyTesting/docs_b139/jre/api/net_jre_7b139.jar

HTML4 compliance report:
http://sqeweb.sfbay.sun.com//net/sqenfs-1/scratch/results/javadoc/jdk7api_test1_2011-05-10-133504/Report.html

Tested with JDK7b139.