javascript execution

how do i track it in IE developers tools

as when i tried to debug the script in IEno records in grid  r displayed on strating debugging in script otherwise its displayed

There's no developer tools in IE. You need to complete the debugging by pressing F5 otherwise the code stops the execution

i am using IE 8

in which in the tools menu there is developers tools

Check this

http://berniesumption.com/software/how-to-debug-javascript-in-internet-explorer/

after setting the internet option for debugging when  i execute the application and the browser starts i get

Visual Studio Just-In-Time Debugger [Main Instruction] An unhandled exception ('Script Breakpoint') occurred in iexplore.exe [3632]. The Just-In-Time debugger was launched without necessary security permissions. To debug this process, the Just-In-Time debugger must be run as an Administrator. Would you like to debug this process? [^] Hide process details  [Yes, debug iexplore.exe] [No, cancel debugging]