Why is favicon not being displayed for pop-up windows opened using JS window.open function?

Hello All, The favicon is not being picked up & displayed by firefox in the pop-up windows that are opened using JavaScript window.open function. The pop-up window title bar shows the default firefox icon whereas the main window tab shows the custom favicon that is put using the code line <link rel="icon" href="<%=request.getContextPath()%>/images/favicon.ico"/>. The same code works in chrome browser without a problem. Is there any specific way for this to work properly in firefox browser? Along with everything else (I wish as a coder) this should be browser independent right? Regards, Shiva Shankar, Bengaluru