Insert page number to website

Hi there,
i am designing my own site. i was stuck with product page.
i need to add page number for product page.
i have more number of product. i want to use page number to show the list of product. i need to display 5 item per page. i want link prev and next alone.
i am using html, js, css and mysql.
please show me a example with code.
Thanx
With regards,
Raj