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JS for image enlargement and reduction

Source: Internet
Author: User
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<HTML>
<HEAD>
<Meta http-equiv = "Content-Type" content = "text/html; charset = UTF-8"/>
<TITLE> huoche.com-China Railway Passenger Line </TITLE>
<META content = "the national railway passenger line shows the operating lines of the national railway passenger and freight system. A powerful railway network composed of hundreds of railway lines nationwide, covering more than 30 provinces and municipalities and Special Administrative Regions "name =" description ">
<META content = "train fare, train ticket query, train fare query, National Railway Passenger Line" name = "keywords">
<SCRIPT language = javascript>
<! --
W = 160.0;
H = 128.2;
C = 4;

Function btn1_onclick (){
If (c <10 ){
C ++;
Document. all ("ditu1"). width = Math. round (w * c );
Document. all ("ditu1"). height = Math. round (h * c );
}
}

Function btn2_onclick (){
If (c> 2 ){
C --;
Document. all ("ditu1"). width = Math. round (w * c );
Document. all ("ditu1"). height = Math. round (h * c );
}
}
// -->
</SCRIPT>
</HEAD>
<Body text = #000000 bgcolor = # ffffff leftmargin = 0 topmargin = 0>
<Center>
</Span>
</TD>
</Tr>

</Table>
<Br>
& Nbsp;
<Input id = btn1 accesskey = z onclick = "Return btn1_onclick ()" type = button value = Z. Enlarge name = btn1>

& Nbsp; <input id = btn2 accesskey = x onclick = "Return btn2_onclick ()" type = button value = x. Narrow down name = btn2>

<Br>
<Table cellspacing = 0 cellpadding = 0 width = 750 bgcolor = # cc9900 border = 0> <! -- Dwlayouttable -->
<Tbody>
<TR>
<TD vAlign = top width = 750>
<TABLE cellSpacing = 1 cellPadding = 0 width = "100%" border = 0> <! -- DWLayoutTable -->

<TBODY>
<TR>
<TD vAlign = top align = middle bgColor = # ffffff>
<TABLE cellSpacing = 0 cellPadding = 0 width = "100%" border = 0> <! -- DWLayoutTable -->
<TBODY>
<TR>
<TH vAlign = top align = middle width = "100%" height = 513> Id = ditu1 height = 513 alt = [National Railway Passenger Line]
Src = "images/railway_cn.gif"
Width = 640
Border = 0>
</TH>
</Tr>
</Tbody>
</Table>
</TD>
</Tr>
</Tbody>
</Table>
</TD>
</Tr>
</Tbody>
</Table>
</CENTER>
</BODY>
</HTML>

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