// header main menu dropdown (V. Nguyen)
function menuDropdown() {
	var i, menuItems, openMenuItem = null,
	container = document.getElementById('main-menu-dropdown'),
	menuItemClick = function () {
		return function () {
			if (!this.className.match(/main-menu-active/)) {
				if(openMenuItem !== null){
					openMenuItem.className = openMenuItem.className.replace(/\s*main-menu-active/, '');
				}
				this.className += ' main-menu-active';
				openMenuItem = this;
			} else {
				this.className = this.className.replace(/\s*main-menu-active/, '');
				openMenuItem = null;
			}
		};
	},
	menuItemBlur = function () {
		return function () {
			this.className = this.className.replace(/\s*main-menu-active/, '');
			openMenuItem = this;
		};
	};
	if (container) {
			menuItems = container.getElementsByTagName('li');
			for (i = 0; i < menuItems.length; i++) {		
				menuItems[i].onclick = menuItemClick();
				menuItems[i].onblur = menuItemBlur();
			}
	}
}

/* please add the following to initPage function at the bottom of global js file


// init header main menu dropdown (V. Nguyen)
menuDropdown();


*/