// set up drop downs anywhere in the body of the page. I think the bottom of the page is better.. 
	// but you can experiment with effect on loadtime.
	if (mtDropDown.isSupported()) {

		//==================================================================================================
		// create a set of dropdowns
		//==================================================================================================
		// the first param should always be down, as it is here
		//
		// The second and third param are the top and left offset positions of the menus from their actuators
		// respectively. To make a menu appear a little to the left and bottom of an actuator, you could use
		// something like -5, 5
		//
		// The last parameter can be .topLeft, .bottomLeft, .topRight, or .bottomRight to inidicate the corner
		// of the actuator from which to measure the offset positions above. Here we are saying we want the 
		// menu to appear directly below the bottom left corner of the actuator
		//==================================================================================================
		var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);

		//==================================================================================================
		// create a dropdown menu
		//==================================================================================================
		// the first parameter should be the HTML element which will act actuator for the menu
		//==================================================================================================
		
		var menu1 = ms.addMenu(document.getElementById("menu1"));
		menu1.addItem("Olympus AU400 (e)", "./Olympus_AU400.htm");
		menu1.addItem("Olympus AU600", "./Olympus_AU600.htm");
		menu1.addItem("Olympus AU640 (e)", "./Olympus_AU640.htm");
		menu1.addItem("Olympus AU680", "./Olympus_AU680.htm");
		menu1.addItem("Olympus AU2700", "./Olympus_AU2700.htm");
		menu1.addItem("Olympus AU5200", "./Olympus_AU5200.htm");
		menu1.addItem("Olympus AU5400", "./Olympus_AU5400.htm");
	
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("Modular Systems", "./modular_systems.htm");

	    
		
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("AU400 (e) Consumables", "./olympus_au400_consumables.htm");
		menu3.addItem("AU600 Consumables", "./olympus_au600_consumables.htm");
		menu3.addItem("AU640 (e) Consumables", "./olympus_au640_consumables.htm");
		menu3.addItem("AU680 Consumables", "./olympus_au680_consumables.htm");
		menu3.addItem("AU2700 Consumables", "./olympus_au2700_consumables.htm");
		menu3.addItem("AU5200 Consumables", "./olympus_au5200_consumables.htm");
		menu3.addItem("AU5400 Consumables", "./olympus_au5400_consumables.htm");
		menu3.addItem("Roche/Hitachi Consumables", "./Roche_Hitachi_consumables.htm");
		
		
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("General Chemistries", "./general_reagents.htm");
		menu4.addItem("Special Chemistries", "./Special_reagents.htm");
		menu4.addItem("ISE Reagents", "./ISE_reagents.htm");
	
	


		//==================================================================================================
		// write drop downs into page
		//==================================================================================================
		// this method writes all the HTML for the menus into the page with document.write(). It must be
		// called within the body of the HTML page.
		//==================================================================================================
		mtDropDown.renderAll();
	}