Liveconnect: Passing null to JSObject methods e.g. JSObject.eval either hangs or crashes the VM/browser

FX runtime : http://jfx.sfbay.sun.com/hudson/job/presidio-deploy-scrum/252/label=windows-i586-14/artifact/artifacts/bundles/release/
JRE: jdk7-b147 and latest 7-client build

Under negative scenarios testing it has been noticed that passing null to JSObject methods e.g. JSObject.eval either hangs or crashes the VM/browser
Crash logs:
http://sqeweb.us.oracle.com/deployment2/jitu/latest_ws_test/6/deployment/src/javafx/hs_err_pid4168.log
http://sqeweb.us.oracle.com/deployment2/jitu/latest_ws_test/6/deployment/src/javafx/hs_err_pid5428.log

Steps to reproduce
1) Install jre followed by fx runtime
2) load following applet inside the browser
http://sqeweb.us.oracle.com/deployment2/jitu/latest_ws_test/6/deployment/src/javafx/LiveConnect/LiveConnect/html/EvalTest_1Plus1_negative.html

It has been noticed most of the time IE hangs(sometimes crashes too) but firefox/chrome crashes right away