Test your web pages in different screen resolutions and window dimensions prior to posting them to your web site.

URL: 

Open a window 544 x 383 pixels = DPI : (WebTV)

Open a window 640 x 480 pixels = DPI :

Open a window 800 x 600 pixels = DPI :

Default Netscape Browser sizes:

640 x 480
    Mac = 470x300:      PC = 580x300:  

800 x 600
    Mac = 470x430:      PC = 580x430:  

1024 x 768
    Mac = 470x600:      PC = 580x600: