HTML File Chooser Filtering

In normaly HTML scripting where it allows the user to select a file throuhg an ordinary file chooser from a click of a button, can the file type of the file chooser be changed. For ex: when the file chooser is opened through IE, “All Files(*.*)” comes as the default file type, and in Netscape, “HTML(htm.*, html.*)” comes as the default file type. Can these two occations have a common format…. ie either both should be All files or HTML files. This has to be forcefully done in the HTML script itself.
An early reply would be much appreciated.