Javascript实现IE直接打印

<script language="javascript" type="text/javascript">
function preview() {
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();
window.document.body.innerHTML = bdhtml;
}
</script>

<form id="form1" runat="server">
<!--startprint-->
<div style="border:dottted">
<br />
Dear
<asp:Label ID="lb_Name" runat="server"></asp:Label>

,<br />
<br />
With reference to the outstanding invoice,please note that it remains
outstanding till today.Kindly advice payment details if payment has been
made,otherwise kindly expedite the payment.Attached are the invoice
details.Please ensure that payment reaches us
<div id="byDay" runat="server"></div><br />
<br />
<b>If payment is not received within 3 months for SDF funded courses from the
completion of the course,we will resend a debit note,reflecting the unclaimed
SDF amount for your settlement.<br />
If payment is not received within 60 Days from Date of Invoice,we will impose a
late payment penalty charge of 2% interest per month</b><br />
<br />
Should you require furtther clarifications on the said invoice,please do not
hesitate to contact Finance Department at 63237911.<br />
<br />
Kind Regards,<br />
Aileen LIEW<br />
AR & Admin
<br />
<br />
</div>
<!--endprint-->
<div style="text-align:center">
<asp:Button ID="btn_Print" runat="server" Width="60px" Text="Print" OnClientClick="preview()" />
</div>
</form>