web打印

我用ScriptX.cab打印控件打印完后多走一张空白纸   请问有知道原因跟解决方法的么  能不能告诉我 
代码 <object id=factory class="noprint" style="display:none"   
 classid="clsid:1663ed61-23eb-11d2-b92f-008048fdd814"   
 codebase="/who/download/scriptx/smsx.cab#Version=6,4,438,06">   
</object>    
<script>   
function printWindow() {
if (!factory.object) {
alert("打印控件不能正确安装!请退出360和其它阻止程序，或者点击允许执行!");
return;
} else {
factory.printing.header = "";
factory.printing.footer = "";
factory.printing.portrait = true; //设为true就是纵向  
factory.printing.leftMargin = 1.0;
factory.printing.topMargin = 1.0;
factory.printing.rightMargin = 1.0;
factory.printing.bottomMargin = 1.0;
}
}
printWindow();
</script>