摘要：
<script language="Javascript"> function preview() { var prnhtml=null; bdhtml=window.document.body.innerHTML; sprnstr="<!--startprint-->";//开始标识 eprnstr="<!--endprint-->";//结束标识 prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17); prnhtml=prnhtml.substrin 阅读全文