How i add image map in joomla article?

I have to give link to multiple parts of the image.so please tell me how i can do it in joomla1.5.22.

You are using JCE as your WYSIWYG editor right? If not, start by adding that. It's free and way better than TinyMCE. Once you have JCE installed, go to Components > JCE > Configuration and add map[name],area[shape|coords|href|alt|title] to the extended elements. Now you will be able to add the map code without losing it when you save plus you get a much better editor.