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Automatic Screen scrolling

Source: Internet
Author: User
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// Reprinted

<! -- <! Doctype HTML public "-// W3C // dtd xhtml 1.0 transitional // en" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> -->
<HTML xmlns = "http://www.w3.org/1999/xhtml">
<Head>
<Title> untitled page </title>

<SCRIPT type = "text/JavaScript">
VaR currentpos, timer;

Function initialize ()
{
Timer = setinterval ("scrollwindow ()", 50 );
}

Function SC ()
{
Clearinterval (timer );
}

Function scrollwindow ()
{
Currentpos = document. body. scrollTop;
Window. scroll (0, ++ currentpos );

If (currentpos! = Document. body. scrollTop)
SC ();
}

Document. onmousedown = SC
Document. ondblclick = initialize
</Script>

</Head>
<Body>
<H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling <H1> double-click automatic scrolling </Body>
</Html>

Note that the doctype attribute of the first line specifies the document type definition (DTD) that HTML documents follow ).

About! DOCTYPE see http://baike.baidu.com/view/1091028.htm

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