// JavaScript 
var myvar;
function menuinit() {
capas=document.getElementsByTagName('ul');
for (i=0;i<capas.length;i++){
	if(capas[i].id.indexOf('m') != -1){
	capas[i].style.display='none';
	}
}

}
function menuexpand (i) {
        menuinit();
        if (myvar == i) {
		
		document.getElementById(i).style.display = 'none';
		myvar = '';
	}
        else {
		
		document.getElementById(i).style.display = 'block';
		myvar = i;
	}
}