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JS achieves advertisement floating

Source: Internet
Author: User
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<! Doctype HTML public "-// W3C // dtd html 4.0 transitional // en">
<HTML>
<Head>
<Title> floating advertisement </title>
<SCRIPT type = "text/JavaScript">

VaR tips;
VaR thetop = 50/* This is the default height. The larger the value, the lower the value */;
VaR old = thetop;

Function initfloattips (){
Tips = Document. getelementbyid ("qqfloat ");
Movetips ();
};

Function movetips (){
VaR TT = 10;
If (window. innerheight ){
Pos = Window. pageyoffset
}
Else if (document.doc umentelement & document.doc umentelement. scrolltop ){
Pos = document.doc umentelement. scrolltop
}
Else if (document. Body ){
Pos = Document. Body. scrolltop;
}

Pos = pos-tips.offsetTop + thetop;
Pos = tips. offsettop + POS/10;

If (Pos <thetop) Pos = thetop;
If (Pos! = Old ){
Tips. style. Top = POS + "PX ";
Tt = 10;
// Alert (tips. style. Top );
}
Old = Pos;
SetTimeout (movetips, TT );
}

Window. onload = initfloattips;
</SCRIPT>
</Head>
<Body>
<Div id = "qqfloat" style = "Top: 50px; position: absolute; Border: dashed 1px # f90; line-Height: 20px; width: 100px;">
Floating advertisement <br>
Floating advertisement <br>
Floating advertisement <br>
Floating advertisement <br>
Floating advertisement <br>
Floating advertisement <br>
Floating advertisement <br>
Floating advertisement <br>
</Div>
<P> & nbsp; </P>
<P> & nbsp; </P>
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<P> & nbsp; </P>
</Body>
</Html>

 

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Related Keywords:
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