function submenu(){
	
var menu = document.getElementById('menu')
var lista = menu.getElementsByTagName('li')

for(var i=0; i<lista.length; i++) {
	
lista[i].onmouseover = function ()
{
var rr='Sub_'+this.id
document.getElementById(rr).style.display='block'
document.getElementById(rr).onmouseover = function () {document.getElementById(rr).style.display='block'}
}
	
lista[i].onmouseout = function ()
{
var rr='Sub_'+this.id
document.getElementById(rr).style.display='none'
document.getElementById(rr).onmouseout = function () {document.getElementById(rr).style.display='none'}
}
}
}