页面中如何选择打印的范围

 <script type="text/javascript">
function prview()
{
    bdhtml = window.document.body.innerHTML;
    sprnstr="<!--startprint-->";
    eprnstr="<!--endprint-->";
    prnhtml=bdhtml.substr(bdhtml.indexOf(sprnstr)+17);
prnhtml=prnhtml.substring(0,prnhtml.indexOf(eprnstr));
window.document.body.innerHTML = prnhtml;
window.print();
}
</script>

要打印的表格前面加<!--startprint-->
后面加<!--endprint-->
就可以了