Netscape has the bad habit of only displaying the alternative text if it happens to fit the space provided. You will probably have sites for which you make exceptions. I will allow artistic sites and certain game sites to have full multimedia capabilities. Your mileage will vary. Any truly business oriented site should be able to present all the information necessary for you without any of these fancies.
Some web sites are a nightmare to navigate.
You aren't sure where you are, nor where the information you need might be. If you can find a contact email address, tell them about the problem. Some corporations seem to reflect their internal structure in their web site, which leaves outsiders completely puzzled as to where information might be. Web sites should not resemble adventure games. Preventing pop-ups and other annoyances Turn off the Javascript.