mtDropDown.spacerGif = "";					//下拉菜单的箭头
mtDropDown.dingbatOn = "../com/upfile/skin/arrow.gif";			//有子菜单
mtDropDown.dingbatOff = "../com/upfile/skin/arrow.gif";			//子菜单已经弹出
mtDropDown.dingbatSize = 8;					//图片宽度
mtDropDown.menuPadding = 2; 
mtDropDown.itemPadding = 4; 
mtDropDown.shadowSize = 1; 
mtDropDown.shadowOffset = 3; 
mtDropDown.shadowColor = "#111111"; 
mtDropDown.shadowPng = ""; 
mtDropDown.backgroundColor = "#A97138"; 
mtDropDown.backgroundPng = ""; 
mtDropDown.hideDelay = 600;					//自动搜索菜单的时间
mtDropDown.slideTime = 450;					//弹出速度