maphilight applies to images with a 'usemap' attribute, and outlines the areas defined in their map on mouseover. It provides a single jQuery function: $('.foo').maphilight() This would hilight every image with a map on the page: $('img[usemap]').maphilight() Demos The simple demo (with awful art, and examples of data attributes) A map of the world A map of the USA A few feature-demonstrations Plu