web打印的有关问题请多多指教 急

web打印的问题请多多指教 急啊！
<script   defer>  
    function   SetPrintSettings()   {  
    　//   --   advanced   features  
    　factory.printing.SetMarginMeasure(2)   //   measure   margins   in   inches  
    　factory.SetPageRange(false,   1,   3)   //   need   pages   from   1   to   3  
    　factory.printing.printer   =   "HP   DeskJet   870C "  
    　factory.printing.copies   =   2  
    　factory.printing.collate   =   true  
    　factory.printing.paperSize   =   "A4 "  
    　factory.printing.paperSource   =   "Manual   feed "  
     
    　//   --   basic   features  
    　factory.printing.header   =   "This   is   MeadCo "  
    　factory.printing.footer   =   "Advanced   Printing   by   ScriptX "  
    　factory.printing.portrait   =   false  
    　factory.printing.leftMargin   =   1.0  
    　factory.printing.topMargin   =   1.0  
    　factory.printing.rightMargin   =   1.0  
    　factory.printing.bottomMargin   =   1.0  
    }  
  </script>  
高手们能告诉我factory组件是干吗的？是怎么使用？和这方面的资料谢谢谢！！！！！！！

------解决方案--------------------
没见到 factory 的定义,建议往上找找
------解决方案--------------------
http://hi.baidu.com/see7di/blog/item/7dca1a238bd3594f93580742.html