President George H.W. Bush signed the Americans with Disabilities Act into law July 26, 1990. The ADA prohibits discrimination of people with disabilities and guarantees the same opportunities as everyone else. These opportunities include employment possibilities, purchasing of goods and services and the ability to participate in State and local government programs.
There are several phases to go through to make a website ADA accessible. First, it is important to have your existing website evaluated for ADA accessibility. Have this evaluation done by a company that specializes in ADA compliance for lodging properties. Most existing websites will not pass a detailed ADA evaluation. Depending on the results of your professional ADA inspection, you will either have to make necessary changes to your existing website, or have it redesigned to meet ADA accessibility guidelines. 
The words in the tag should be more than a description. They should provide a text equivalent of the image. In other words, the tag should include the same meaningful information that other users obtain by looking at the image. In the example of the mayor’s picture, adding an “alt” tag with the words “Photograph of Mayor Jane Smith” provides a meaningful description.
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