mtDropDown.spacerGif = "../products/blank.gif";				//下拉菜单的空白
mtDropDown.dingbatOn = "../products/arrow1.gif";			//有子菜单
mtDropDown.dingbatOff = "../products/arrow2.gif";			//子菜单已经弹出
mtDropDown.dingbatSize = 9;								//箭头宽度
mtDropDown.menuPadding = 1; 
mtDropDown.itemPadding = 2;
mtDropDown.shadowSize = 2;
mtDropDown.width = 150;
mtDropDown.shadowOffset = 3; 
mtDropDown.shadowColor = "#000000"; 
mtDropDown.shadowPng = ""; 
mtDropDown.backgroundColor = "#77A5D2"; 
mtDropDown.backgroundPng = ""; 
mtDropDown.hideDelay = 500;							//自动搜索菜单的时间
mtDropDown.slideTime = 250;								//弹出速度