if (mtDropDown.isSupported()) { var ms = new mtDropDownSet(mtDropDown.direction.down, -60, 0, mtDropDown.reference.bottomLeft); var menu2 = ms.addMenu(document.getElementById("menu2")); menu2.addItem("- 项目管理", "redirect.asp?id=83&classLevel=secondClass"); menu2.addItem("- 项目一览", "redirect.asp?id=84&classLevel=secondClass"); menu2.addItem("- 项目介绍", "redirect.asp?id=85&classLevel=secondClass"); var menu3 = ms.addMenu(document.getElementById("menu3")); menu3.addItem("- 成果管理", "redirect.asp?id=86&classLevel=secondClass"); menu3.addItem("- 成果一览", "redirect.asp?id=87&classLevel=secondClass"); menu3.addItem("- 成果推介", "redirect.asp?id=88&classLevel=secondClass"); mtDropDown.renderAll(); }