A system and associated method for determining web analytics information. A Hypertext Transfer Protocol (HTTP) request for a target page referred from a referring page by a mouse click is processed to calculate web analytics data in the target page. The web analytics data regarding a mouse cursor position, a 2-dimensional information of the target page, and the URL of the referring page is transmitted to a web analytics server to generate the web analytics information for the referring page in format of a heat map of the referring page.