function mostrar_menu(x) {
	if (document.getElementById('mostrar_menu' + x).style.visibility == 'hidden') {	
		document.getElementById('mostrar_menu' + x).style.visibility = 'visible';
		document.getElementById('mostrar_menu' + x).style.height = 'auto';
		document.getElementById('mostrar_menu' + x).style.width = '160px';
		document.getElementById('mostrar_menu' + x).style.display = '';
		document.getElementById('menu_node' + x).style.background = 'url(img/arrow_state_blue_collapsed.png) left no-repeat'	
		document.getElementById('menu_node' + x).onmouseover = function() {this.style.background = '#E2E2E2 url(img/arrow_state_blue_expanded.png) left no-repeat';}
		document.getElementById('menu_node' + x).onmouseout = function() {this.style.background = 'url(img/arrow_state_blue_collapsed.png) left no-repeat';}
		
		minimizar_menus(x)
	}
	else if (document.getElementById('mostrar_menu' + x).style.visibility == 'visible') {
		document.getElementById('mostrar_menu' + x).style.visibility = 'hidden'
		document.getElementById('mostrar_menu' + x).style.height = '';
		document.getElementById('mostrar_menu' + x).style.width = '';
		document.getElementById('mostrar_menu' + x).style.display = 'none';
		document.getElementById('menu_node' + x).style.background = 'url(img/arrow_state_blue_right.png) left no-repeat'
		document.getElementById('menu_node' + x).onmouseover = function() {this.style.background = '#E2E2E2 url(img/arrow_state_blue_expanded.png) left no-repeat';}
		document.getElementById('menu_node' + x).onmouseout = function() {this.style.background = 'url(img/arrow_state_blue_right.png) left no-repeat';}
		
		minimizar_menus(x)
	}
}

function minimizar_menus(x) {
	for (i=0;i<=17;i++) {
		if (i != x) {
			document.getElementById('mostrar_menu' + i).style.visibility = 'hidden';
			document.getElementById('mostrar_menu' + i).style.height = '';
			document.getElementById('mostrar_menu' + i).style.width = '';
			document.getElementById('mostrar_menu' + i).style.display = 'none';
			document.getElementById('menu_node' + i).style.background = 'url(img/arrow_state_blue_right.png) left no-repeat';
			if (document.getElementById('a_mm' + i).href == '') {
				document.getElementById('menu_node' + i).onmouseover = function() {this.style.background = '#E2E2E2 url(img/arrow_state_blue_expanded.png) left no-repeat';};
				document.getElementById('menu_node' + i).onmouseout = function() {this.style.background = 'url(img/arrow_state_blue_right.png) left no-repeat';}
			}
			else {
				document.getElementById('menu_node' + i).onmouseover = function() {this.style.background = '#E2E2E2 url(img/arrow_state_blue_right.png) left no-repeat';};
				document.getElementById('menu_node' + i).onmouseout = function() {this.style.background = '';}
			}
		}
	}
}