Search help is not working

Hi,

i have used the following link http://saptechnical.com/Tutorials/BSP/F4Help/Tutorial.htm for search help in BSP for different field as per my requirement, but f4help.htm is not displayed and on the status bar of the browser it is showing 'Error on the page' when i click on f4 help. Is there any other links for f4 help for a field to create in bsp??