How to highlight search string in HTML

I'm using CGI script to create a Telephone Directory(Web based):If I give "ashok" the results will be as shown below.But I want to highlight the string "ashok" in the results(In the HTML page).How Can I do that?

NAME    PHONE No.   CITY开发者_如何转开发    STATE   ADDRESS
Ashok   0956-253545     Gangtok     Sikim   H.no:A-22/54,lalnagar near kurji road,PIN::600033
Ashok Singh     0992-765876     punjab  Punjab  H.no:B-33/7,yerrakonda,ambedkar road,Pin:800234
Ashok Singh Sai     0452-764876     Gorakhpur   Sikim   H.no:B-23/7,konda,Bapuji road,Pin:4500234

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Well it depends how you have the data laid out. If you have it as a table, set the cell's background colour, if not wrap the text to be highlighted in a <span> and set the background colour on that. It will give an impression like Google's cached pages highlight search terms.

<span style="background-color: #0dd;">Ashok</span>