/**************************************************************************
 *                                                                        *
 *  JAVASCRIPT MENU HIGHLIGHTER v.1.0 (051123)                            *
 * --------------------------------------------                           *
 * ©2005 Media Division (www.MediaDivision.com)                           *
 *                                                                        *
 * Written by Marius Smarandoiu & Armand Niculescu                        *
 *                                                                        *
 * You are free to use, modify and distribute this file, but please keep  *
 * this header and credits                                                *
 *                                                                        *
 * Usage:                                                                 *
 * - the script will apply the .current class to the <a> and its parent   *
 *   <li> that is contained in the element with id="primarynav" and points*
 *   to the current URL                                                   *
 * - works in IE6, Firefox and Opera                                      *
 **************************************************************************/
 // extract the file name from a URL 
//("if input is /files/index.html", output is "index")
function extractPageName(hrefString)
{
	var arr = hrefString.split('.');
 // Check to see if the url has a query string by searching for the question mark	
	var hasquestion=hrefString.indexOf('?');
     if (hasquestion == '-1')
      {
	  	arr = arr[arr.length-2].split('/'); 
		return arr[arr.length-1].toLowerCase();
      }	
	  else
	  {
		return arr[arr.length-1].toLowerCase();
	  }
}

// search through all the links in array, if one points to
// the same file, apply the class .current to it and to its parent
function setActiveMenu(arr, crtPage)
{
	for(var i=0; i < arr.length; i++)
		if(extractPageName(arr[i].href) == crtPage)
		{
			arr[i].className = "current";
			arr[i].parentNode.className = "current";
		}
}

// call this method from your page
function setPage()
{
	if(document.location.href) 
		hrefString = document.location.href;
	else
		hrefString = document.location;

	if (document.getElementById("nav-left")!=null) 
		setActiveMenu(document.getElementById("nav-left").getElementsByTagName("a"), extractPageName(hrefString));
}