我想自定义打印纸张的尺寸，可在IE浏览器中的页面设置功能中没有自定义打印纸张尺寸的功能，用javascript怎么才能实现呢？
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1<script defer="">
2function SetPrintSettings() {
3// -- advanced features
4factory.printing.SetMarginMeasure(2) // measure margins in inches
5factory.SetPageRange(false, 1, 3) // need pages from 1 to 3
6factory.printing.printer = "HP DeskJet 870C"
7factory.printing.copies = 2
8factory.printing.collate = true
9factory.printing.paperSize = "A4"
10factory.printing.paperSource = "Manual feed"
11
12// -- basic features
13factory.printing.header = "This is MeadCo"
14factory.printing.footer = "Advanced Printing by ScriptX"
15factory.printing.portrait = false
16factory.printing.leftMargin = 1.0
17factory.printing.topMargin = 1.0
18factory.printing.rightMargin = 1.0
19factory.printing.bottomMargin = 1.0
20}
21
22function Print(frame) {
23factory.printing.Print(true, frame) // print with prompt
24}
25</script>