Browsers
What do Browsers do?
Browsers request Web pages from Web servers. But first they must use the DNS system to look up the IP address of the Web site. After they get the page, they also request the images and other objects that are linked by the Web page. Without them, the Web page is incomplete.
IE6 vs IE7 and Firefox:
IE6 is not very standards compliant. However, basic pages work well in IE6. Firefox is standards compliant, and Microsoft pormises IE7 will be. Why do you care? Some pages do not "work" in all browsers, so it's a good idea to check them in both browsers. Opera is more like Firefox, so most pages will work well in both.
Browsers vs Web Servers:
Web pages are stored on the Web, and Web servers "serve" them to browsers. The pages are stored in many ways, some of them very unlike HTML pages. The pages that are served are a composite that behave like HTML -- more or less. Sometimes you are not able to save the Web page -- Gmail is an example. In other cases you are saving the composite, not the raw files. For example, he server can access and serve images from literally anywhere on the Internet. When you save a file from the browser, the images are usually put in a folder that is associated with the HTML file. The browser transforms the image links to reflect their new relative location.
