/* Get viewport width and height */

	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
	}

	var maxLightboxIMGHeight = 1000;

	var lightboxIMGHeight = viewportheight - 140;

	if ( lightboxIMGHeight > maxLightboxIMGHeight ) {
		lightboxIMGHeight = maxLightboxIMGHeight;
	}

// 	document.write('<p>Your viewport width is '+viewportwidth+'x'+viewportheight+'</p>');

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;
}