// Javascript for Index Pages

function GetCookie (name) {
  var arg = name + "=";
  var alen = arg.length;
  var clen = document.cookie.length;
  var i = 0;
  while (i < clen) {
    var j = i + alen;
    if (document.cookie.substring(i, j) == arg)
      return getCookieVal (j);
    i = document.cookie.indexOf(" ", i) + 1;
    if (i == 0) break; 
  }
  return null;
}

function getCookieVal (offset) {
  var endstr = document.cookie.indexOf (";", offset);
  if (endstr == -1)
    endstr = document.cookie.length;
  return unescape(document.cookie.substring(offset, endstr));
}

function SetCookie (name, value) {
  var argv = SetCookie.arguments;
  var argc = SetCookie.arguments.length;
  var expires = (argc > 2) ? argv[2] : null;
  var path = (argc > 3) ? argv[3] : null;
  var domain = (argc > 4) ? argv[4] : null;
  var secure = (argc > 5) ? argv[5] : false;
  document.cookie = name + "=" + escape (value) +
    ((expires == null) ? "" : ("; expires=" + expires.toGMTString())) +
    ((path == null) ? "" : ("; path=" + path)) +
    ((domain == null) ? "" : ("; domain=" + domain)) +
    ((secure == true) ? "; secure" : "");
}

function DeleteCookie (name) {
	var exp = new Date();
	exp.setTime (exp.getTime() - 1);
	// This cookie is history
	var cval = GetCookie (name);
	document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}


var expDays = 3;
var exp = new Date();
exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

// If refering page is not this domain, then set the referal cookie
var referral = document.referrer + "";
var UrlPattern = /^http:\/\/www\.multilink\.org/i;
if (!(UrlPattern.test(referral))) {
	if (referral != null && referral != "") {
		SetCookie('IndexReferral', referral, exp, '/', '.multilink.org');
		// Redirect to fancy site page.
		var bname = navigator.appName;
		var current_url = location.href;
		var new_url;
		var UrlPattern = /^http:\/\/www\.multilink\.org\/pages\/([0-9])+\.html/i;
		if ((bname.indexOf("Netscape")!=-1 || bname.indexOf("Microsoft")!=-1) && UrlPattern.test(current_url)) {
			new_url = current_url.replace('http://www.multilink.org/pages/','http://www.multilink.org/catalog/product_info.php?products_id=');
			new_url = new_url.replace('.html','');
			window.location = new_url;
		}
	}
}