Conversión de Pulgadas a Centímetros

Se ve así:

pulgadas a cm

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<script type="text/javascript">function changeButton2166(){document.getElementById('convertButton2166').style.backgroundImage="url(http://metric-conversions.org/img/calcButton.jpg)";}function changeBack2166(){document.getElementById('convertButton2166').style.backgroundImage="none";}function convert2166(){var arguement=(document.inputForm2166.arguement.value-0);arguement=(arguement-0);arguement=(arguement*0.0254);arguement=(arguement/0.01);arguement=(arguement+0);arguement= Math.round(arguement*1000)/1000;document.inputForm2166.result.value= arguement+' cm';}</script><form name="inputForm2166" id="inputForm2166"><div style="background-image:url(http://www.metric-conversions.org/img/calcTool.jpg);background-repeat:no-repeat;background-color:#000000;height:180px;width:250px;"><a href="http://www.paralgosirve.blogspot.com" target="_blank" style="position:relative;display:block;width:240px;padding:8px 0 0 0;margin:0 0 0 0;font-family:Arial, Helvetica, sans-serif;font-size:12px;font-weight:bold;text-align:center;color:#FFFFFF;text-decoration:none;">pulgadas a cm</a><input type="text" name="arguement" id="arguement" style="background-image:url(http://www.metric-conversions.org/img/calcIP.jpg);width:207px;height:32px;font-family:Arial, Helvetica, sans-serif;font-size:24px;font-weight:bold;border:0px;position:relative;top:20px; left:21px; line-height: 34px;padding:0 0 0 0;margin:0 0 0 0;" value="Tipo de valor aquí" onfocus="javascript:this.value='';" /><div id="convertButton2166" style="position:relative;display:block;height:30px;width:105px;top:26px;left:124px;padding:0 0 0 0;margin:0 0 0 0;border:0px;z-index:2;cursor:pointer;" onmouseover="javascript:changeButton2166();" onmouseout="javascript:changeBack2166();" onclick="javascript:convert2166();"></div><input id="result" type="text" name="arg" style="background-image:url(http://www.metric-conversions.org/img/calcIP.jpg);width:207px;height:32px;font-family:Arial, Helvetica, sans-serif;font-size:24px;font-weight:bold;border:0px;position:relative;top:32px; left:21px; line-height: 34px;padding:0 0 0 0;margin:0 0 0 0;" value="" readonly="readonly" /><span style="position:relative;display:block;top:44px;left:4px;width:240px;padding:0 0 0 0;margin:0 0 0 0;font-family:Arial, Helvetica, sans-serif;font-size:12px;font-weight:bold;text-align:center;color:#FFFFFF;text-decoration:none;">Para Algo Sirve</span></div></form>