903Chapter 32 .Embedded Objects Although you cannot query (Anonymous web server)
903Chapter 32 .Embedded Objects Although you cannot query an applet to find out whether it s loaded (as you can with an image), you can rely on the onLoadevent handler of a window to fire only when all applets in the window are loaded and running (with the occasional version- or platform-specific bug in frames, as described in the window.onLoadevent handler discussion in Chapter 16). IE4+ also features an onLoadevent handler for the APPLET element directly, but applets tend to be the last things to load on a page. Therefore, you won t be able to use an applet embedded in a document to help you create the HTML content of that page as it loads, but an applet can provide content for new documents or for modifiable elements of a page. With the highly dynamic object models of IE4+ and NN6, this can lead to all kinds of possibilities. Java applets have also been used to maintain contact with a server after the page has loaded by way of a servlet running on the server. A servlet allows the applet to query or be refreshed with instantaneously updated information without having to reload the page. Of course, getting a sophisticated applet to run in a wide range of browsers and operating systems is a challenge unto itself. A large set of event handlers for this element (all but onLoadand onScroll) is related to the application of IE/Windows data binding for PARAM elements nested inside an APPLET element. These events fire when a variety of actions occur to the data source or recordset associated with the applet. For more about applying data binding to an APPLET element, see http://msdn.microsoft.com/workshop/ author/databind/dataconsumer.asp. Properties align Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . . The alignproperty controls either the horizontal or vertical alignment of the element with regard to surrounding content. String values of leftor rightcause the applet rectangle to cling to the left or right edges of its next outermost positioning context. String values of absbottom, absmiddle, baseline, bottom, middle, text- top, or topinfluence the vertical alignment with respect to adjacent text, with the same kind of results as corresponding values of the style.verticalAlignproperty. Related Items: style.verticalAlign property. alt Value: String Read/Write NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5 Compatibility . APPLET.alt
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