// JavaScript Document

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}


var submenuVisible;
function MuestraSubMenu(obj) {
	var submenu = MM_findObj(obj);
	
	if( "" == submenu.style.display || "none" == submenu.style.display) {
		submenu.style.display = "block";
		if(submenuVisible) submenuVisible.style.display = "none";
		submenuVisible = submenu;
	} else {
		if(submenu == submenuVisible) submenuVisible = null;
		submenu.style.display = "none";
	}	
}