Thank you for the quick response, Arindam. Definitely I've read http://www.fusioncharts.com/docs/Contents/SAISetting.html and both imageSave and imageSaveURL are properly set up.
My question was probably not completely clear. In fact, the menu item is displayed when I run a browser locally (i.e. on the same machine where the IIS with our website is running). When I run a browser on a remote computer (i.e. I reach the page over the Internet) and invoke the context menu over the chart, the menu item is missing. In both cases, the website is the same.
Could you help me with this? What should be additionally checked in order to put the menu item into the context menu when reaching the chart over the Internet?
Thank you.