javascript实现jsp页面的打印预览

<OBJECT classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2" height="0" id="wb" name="wb" width="3"></OBJECT>
<input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)>

--------------------------------------WebBrowser控件 ---------------------------------------------
<OBJECT id=WebBrowser classid=CLSID:8856F961-340A-11D0-A96B-00C04FD705A2 height=0 width=0 VIEWASTEXT></OBJECT>
<input type=button value=打开 onclick=document.all.WebBrowser.ExecWB(1,1)>
<input type=button value=另存为 onclick=document.all.WebBrowser.ExecWB(4,1)>
<input type=button value=全选 onclick=document.all.WebBrowser.ExecWB(17,1)>
<input type=button value=属性 onclick=document.all.WebBrowser.ExecWB(10,1)>
<input type=button value=关闭窗口 onclick=document.all.WebBrowser.ExecWB(45,1)>
<input type=button value=打印 onclick=document.all.WebBrowser.ExecWB(6,1)>
<input type=button value=直接打印 onclick=document.all.WebBrowser.ExecWB(6,6)>
<input type=button value=页面设置 onclick=document.all.WebBrowser.ExecWB(8,1)>
<input type=button value=打印预览 onclick=document.all.WebBrowser.ExecWB(7,1)>

<a href="javaScript:printpreview();" >◆ 打印预览 </a>

<script type="text/javascript">
//设置网页打印的页眉页脚为空
var HKEY_Root,HKEY_Path,HKEY_Key;
HKEY_Root="HKEY_CURRENT_USER";
HKEY_Path="//Software//Microsoft//Internet Explorer//PageSetup//";
function PageSetup_Null() {
try{
var Wsh=new ActiveXObject("WScript.Shell");
HKEY_Key="header";
Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"");
HKEY_Key="footer";
Wsh.RegWrite(HKEY_Root+HKEY_Path+HKEY_Key,"");
}catch(e){}
}

function printpreview(){
PageSetup_Null();
// 打印页面预览
wb.execwb(7,1);
};
</script>

<style media="print" type="text/css">
.Noprint{display:none;}
.PageNext{page-break-after: always;}
</style>

window.open(url,title,width,height,"_blank");