// 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("- Sobre Nosotros", "nosotros.php"); // send no URL if nothing should happen onclick
		menu1.addItem("- Valores", "valores.php"); // send no URL if nothing should happen onclick
		menu1.addItem("- Misión", "mision.php");
		//==================================================================================================

		//==================================================================================================
		// add a sub-menu
		//==================================================================================================
		// to add a sub menu to an existing menu object, call it's addMenu method and pass it the item from
		// the parent menu which should act as it's actuator. To add a submenu to the fourth item of a menu
		// called "theMenu", you would do theMenu.addMenu(theMenu.items[3])
		//==================================================================================================
	
		// menu : Get Started
		var menu2 = ms.addMenu(document.getElementById("menu2"));
		menu2.addItem("- Casas y Modelos 40 m² a 63 m²", "catalogo40_63.php");
		menu2.addItem("- Casas y Modelos 64 m² a 85 m²", "catalogo64_85.php");
		menu2.addItem("- Casas y Modelos 86 m² a 108 m²", "catalogo86_108.php");
		menu2.addItem("- Casas y Modelos 110 m² a 177.5 m²", "catalogo110_177.5.php");
		
		// menu
		var menu3 = ms.addMenu(document.getElementById("menu3"));
		menu3.addItem("- Galerías", "#");
		menu3.addItem("- Tours Virtuales 180°", "180.php");
		
		// menu
		var menu4 = ms.addMenu(document.getElementById("menu4"));
		menu4.addItem("- Consultorías", "consultorias.php");
		menu4.addItem("- Modelado Tridimensional", "modelado.php");

		// submenu Galerías
		var subMenu1 = menu3.addMenu(menu3.items[0]);
		subMenu1.addItem("· Galería 1", "galeria.php");
		subMenu1.addItem("· Galería 2", "galeria2.php");
		subMenu1.addItem("· Galería 3", "galeria3.php");
		// menu : Contacto
		var menu5 = ms.addMenu(document.getElementById("menu5"));
		menu5.addItem("- Contactos", "contactos.php");
		menu5.addItem("- Formulario", "form.php");

			//==================================================================================================
		// 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();
	}