function change_li_color (id) {
obj = document.getElementById('li_'+id)
obj.style.background = "black"
obj.style.cursor = "hand"
//obj.style.borderColor = '#010101'

}
function change_li_color_back (id) {
obj = document.getElementById('li_'+id)
obj.style.background = "#222222"
obj.style.cursor = "none"

}

function go2url (id) {

if (id == '0') {self.location = 'http://studioplastico.com/las/index.php'}
else {self.location = 'http://studioplastico.com/las/index.php?id=' + id}

}