function addClass(element, value) {
	if(!element.className) {
		element.className = value;
    } else {
		newClassName = element.className;
		newClassName+= " ";
		newClassName+= value;
		element.className = newClassName;
	}
}

function getElementsByClassName(classname, node) {
      if(!node) node = document.getElementsByTagName("body")[0];
      var a = [];
      var re = new RegExp('\\b' + classname + '\\b');
      var els = node.getElementsByTagName("*");
      for(var i=0,j=els.length; i<j; i++)
      if(re.test(els[i].className))a.push(els[i]);
      return a;
}

function menuUpdate(classname)
{
	var nav = getElementsByClassName(classname);
	for(var i=0,j=nav.length; i<j; i++)
	{
		addClass(nav[i], 'active');
	}
}

function menuRemoveActive(classname)
{
	var nav = getElementsByClassName(classname);
	for(var i=0,j=nav.length; i<j; i++)
	{
		RemoveClassName(nav[i], 'active');
	}
}

function RemoveClassName(objElement, strClass)
   {

   // if there is a class
   if ( objElement.className )
      {

      // the classes are just a space separated list, so first get the list
      var arrList = objElement.className.split(' ');

      // get uppercase class for comparison purposes
      var strClassUpper = strClass.toUpperCase();

      // find all instances and remove them
      for ( var i = 0; i < arrList.length; i++ )
         {

         // if class found
         if ( arrList[i].toUpperCase() == strClassUpper )
            {

            // remove array item
            arrList.splice(i, 1);

            // decrement loop counter as we have adjusted the array's contents
            i--;

            }

         }

      // assign modified class name attribute
      objElement.className = arrList.join(' ');

      }
   // if there was no class
   // there is nothing to remove

   }