shape = "circle" indicates a circular area with the given center and radius
<?xml version = "1.0" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns = "http://www.w3.org/1999/xhtml"> <body> <map id = "picture"> <area href = "mailto:d@q.com" shape = "circle" coords = "100,36,33" alt = "" /> </map> <img src = "http://www.java2s.com/style/logo.png" width = "200" height = "144" alt = "logo" usemap = "#picture" /> </body> </html>