var image_name = "/images/en/header_image-";
var image_ext = ".jpg";
var rnd = Math.floor(Math.random()*10) + 1;
var full_name = image_name + rnd  + image_ext;

document.write('<img src="'+ full_name + '" width="785" height="170" usemap="#header" /><map name="header">' + 
'<area coords="640,115,775,160" alt="Homepage" href="/index.html" />' + 
'</map>' +
'<ul>' +
'<li><a href="/index.html">Home</a></li>' + 
'<li class="langue"><a href="/index_fr.html">Français</a></li>' + 
'</ul>' + 
'<div class="clear"></div>')

function setCookie(value)
{
	var curCookie = "preference="
					+ escape(value)
					+ "; expires=Wed, 01-Jan-2020 00:00:01 GMT"
					+ "; path=/"
					+ "; domain=lumec.com";

	document.cookie = curCookie;

	redirect_index(value)
}

function redirect_index(langue)
{
	var redirectUrl;
	if (langue)
	{
		if (langue == 'F')
		{
			redirectUrl = '/index_fr.html';
		}
		else
		{
			redirectUrl = '/index.html';
		}
	}
	else
	{
		redirectUrl = '/index.html';
	}

	window.location = redirectUrl;
}