js implementation of page printing function example code (with header and footer function code attached)_javascript skills

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<script> <br>var HKEY_Root,HKEY_Path,HKEY_Key; <br>HKEY_Root="HKEY_CURRENT_USER"; <br>HKEY_Path="\Software\Microsoft\Internet Explorer\PageSetup\"; <br>//设置网页打印的页眉页脚为空 <br>function PageSetup_Null() <br>{ <br>try <br>{ <br>var Wsh=new ActiveXObject("WScript.Shell"); <br>HKEY_Key="header"; <br>Wsh.RegWrite(HKEY_Root HKEY_Path HKEY_Key,""); <br>HKEY_Key="footer"; <br>Wsh.RegWrite(HKEY_Root HKEY_Path HKEY_Key,""); <br>} <br>catch(e) <br>{} <br><br>} <br><br>//设置网页打印的页眉页脚为默认值 <br>function PageSetup_Default() <br>{ <br>try <br>{ <br>var Wsh=new ActiveXObject("WScript.Shell"); <br>HKEY_Key="header"; <br>Wsh.RegWrite(HKEY_Root HKEY_Path HKEY_Key,"&w&b页码,&p/&P"); <br>HKEY_Key="footer"; <br>Wsh.RegWrite(HKEY_Root HKEY_Path HKEY_Key,"&u&b&d"); <br>} <br>catch(e) <br>{} <br><br>} <br>PageSetup_Default(); <br></script>