function random_text()
{};
var random_text = new random_text();

var number = 0;

random_text[number++] = "<span class=menu style='background-color: #ffffff;'>"
random_text[number++] = "<span class=menu style='background-color: #ffffff;'>"
random_text[number++] = "<span class=menu style='background-color: #ffffff;'>"
random_text[number++] = "<span class=menu style='background-color: #ffffff;'>"
random_text[number++] = "<span class=menu style='background-color: #ffffff;'>"
random_text[number++] = "<span class=menu style='background-color: #ffffff;'>"

var random_number = Math.floor(Math.random() * number);

document.write(random_text[random_number]);