redirUnsupportedDevice = window.cgBaseURL + "cg_gui/unsupported_device";
redirUnsupportedBrowser = window.cgBaseURL + 'cg_gui/unsupported'; // browser name and version get appended later as a hash
redirUnknownBrowser = window.cgBaseURL + 'cg_gui/unknown';

function getBrowser() { // taken from http://browser-update.org
	var n = 'x', // browser short identifier
		v = '', // browser version
		names = { i: 'Internet Explorer',
				  f: 'Firefox',
				  s: 'Apple Safari',
				  c: 'Chrome',
				  x: 'Other',
				  u: 'Unsupported' };

	if (window.opera && /(Opera)/.test('Opera'))			n = 'u'; // you are not IE/FF/whatever even if you say you are
  else if (/(like firefox|chromeframe|seamonkey|camino|flot|k-meleon|galeon|epiphany)/i.test(ua)) n = 'u';
  else if (/Trident.(\d+\.\d+)/i.test(ua)) n="io";
  else if (/MSIE (\d+\.\d+);/.test(ua))					n = 'i';
  else if (/Chrome.(\d+\.\d+)/i.test(ua))					n = 'c';
  else if (/Firefox.(\d+\.\d+)/i.test(ua))				n = 'f';
  else if (/Version.(\d+.\d+).{0,10}Safari/i.test(ua))	n = 's';
  else if (/Safari.(\d+)/i.test(ua))						n = 'so';  // older safari (< 3)

	if (n == 'u') names[n] = RegExp.$1; // set the real (unsupported) the browser name
	else if (RegExp) v = +RegExp.$1; // cast version to a number

	if ( n == 'so') { // they didn't have the actual version number, but only the internal revision
		v = ((v<100) && 1.0) ||
			((v<130) && 1.2) ||
			((v<320) && 1.3) ||
			((v<520) && 2.0) ||
			((v<524) && 3.0) ||
			((v<526) && 3.2) ||
			4.0;
		n = 's';
	}

  if (n=="io") {
      n="i";
      if (v>5) v=10;
      else if (v>4) v=9;
      else if (v>3.1) v=8;
      else if (v>3) v=7;
      else v=9;
  }

	return {n: n, v: v, human: names[n] + ' ' + v};
}

function isHandheld() { // taken from http://detectmobilebrowsers.com
	// # Enabling handheld devices for now 
	return false;

	var device1 = /android|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|symbian|treo|up\.(browser|link)|vodafone|wap|windows (ce|phone)|xda|xiino|playbook|silk/i.test(ua);

	var device2 = /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|e\-|e\/|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(di|rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|xda(\-|2|g)|yas\-|your|zeto|zte\-/i.test(ua.substr(0, 4));

	return device1 || device2;
}

var ua = navigator.userAgent || navigator.vendor || window.opera,
	browser = getBrowser();

if (isHandheld()) console.log('Unsupported Devise');

else if (browser.n == 'x') console.log('Unknown Browser');

else if ( !(
	browser.n == 'f' && browser.v > 3.5 ||
	browser.n == 'i' && browser.v > 7 ||
	browser.n == 's' && browser.v > 3 ||
	browser.n == 'c' )) console.log('Unsupported Browser');
