Javascript实现IE直接打印

1.页面插入：

<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>

注：打印内容为""...""之间页面内容，所以须将这两个标记插入到<body>标记中间。

如下代码所示：

<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 &amp; 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>