var expDays = 1; // number of days the cookie should last

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 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);
      var cval = GetCookie (name);
      document.cookie = name + "=" + cval + "; expires=" + exp.toGMTString();
}

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

function amt(){
      var count = GetCookie('count')
      if(count == null) {
            SetCookie('count','1')
            return 1
      } else {
            var newcount = parseInt(count) + 1;
            DeleteCookie('count')
            SetCookie('count',newcount,exp)
            return count
      }
}

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

function checkCount() {
      var count = GetCookie('count');
      if (count == null) {
            count=1;
            SetCookie('count', count, exp);
            //alert('detecting');
            iPhoneDetect();
      } else {
            count++;
            SetCookie('count', count, exp);
            //document.location = 'http://www.thetin.net';
      }
}

//window.onload=checkCount;

function iPhoneDetect(){
    var agent = navigator.userAgent.toLowerCase();        
    var is_iphone = ((agent.indexOf('iphone')!=-1));
    
    if (is_iphone) { 
        if (confirm('We have an iPhone version of our website, would you like to use it?')){
            document.location = 'http://www.thetin.net/iPhone/';
        }
    }
}