function getInternetExplorerVersion()
// Returns the version of Internet Explorer or a -1
// (indicating the use of another browser).
{
  var rv = -1; // Return value assumes failure.
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}
var ieVersion = getInternetExplorerVersion();

function showIE6Message()
{
	$('#header').after('<div id="ie6msg" class="sitewideAnnouncement">Sorry for the inconvenience, but <strong>Humble Voice no longer supports Internet Explorer 6 and older</strong>.<br />Please upgrade to <a href="http://www.mozilla.com/firefox/">Firefox</a> (recommended) or the latest version of Internet Explorer to ensure better security and compatibility with modern websites.</a>');
}

$(document).ready(function(){
	if(ieVersion > 0 && ieVersion < 7)
	{
		showIE6Message();
	}
});

function getViewportDimensions()
{
	var viewportwidth;
	var viewportheight;
	// the more standards compliant browsers (mozilla/netscape/opera/IE7) use window.innerWidth and window.innerHeight
	if (typeof window.innerWidth != 'undefined')
	{
		viewportwidth = window.innerWidth,
		viewportheight = window.innerHeight
	}
	// IE6 in standards compliant mode (i.e. with a valid doctype as the first line in the document)
	else if (typeof document.documentElement != 'undefined' && typeof document.documentElement.clientWidth != 'undefined' && document.documentElement.clientWidth != 0)
	{
		viewportwidth = document.documentElement.clientWidth,
		viewportheight = document.documentElement.clientHeight
	}
	// older versions of IE
	else
	{
		viewportwidth = document.getElementsByTagName('body')[0].clientWidth,
		viewportheight = document.getElementsByTagName('body')[0].clientHeight
	}
	return new Array(viewportwidth, viewportheight);
}

Array.prototype.in_array = function(p_val) {
	for(var i = 0, l = this.length; i < l; i++) {
		if(this[i] == p_val) {
			return true;
		}
	}
	return false;
}