Change the mouse pointer on the webpage

Hi
Could somebody point me to the right place where I could get the script and
its source to change the mouse pointer to another pointer on my web
page sothat peoplr with low vision could see the pointer clearly?
It is possible since I have seen this on some webpage *
http://wiki.sugarlabs.org/go/Welcome_to_the_Sugar_Labs_wiki

*Regards
Harpreet

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