// JavaScript Document
function addLoadListener(fn)
{
  if (typeof window.addEventListener != 'undefined')
  {
    window.addEventListener('load', fn, false);
  }
  else if (typeof document.addEventListener != 'undefined')
  {
    document.addEventListener('load', fn, false);
  }
  else if (typeof window.attachEvent != 'undefined')
  {
    window.attachEvent('onload', fn);
  }
  else
  {
    var oldfn = window.onload;
    if (typeof window.onload != 'function')
    {
      window.onload = fn;
    }
    else
    {
      window.onload = function()
      {
        oldfn();
        fn();
      };
    }
  }
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_changeProp(objName,x,theProp,theValue) { //v6.0
  var obj = MM_findObj(objName);
  if (obj && (theProp.indexOf("style.")==-1 || obj.style)){
    if (theValue == true || theValue == false)
      eval("obj."+theProp+"="+theValue);
    else eval("obj."+theProp+"='"+theValue+"'");
  }
}


function setNav () {
	navIdPrefix = "site_nav";
	navCurrentClass = "current";
	

	bodyElm = document.getElementsByTagName("body")[0];	
	
	if (bodyElm) {
		
		bodyId = bodyElm.getAttribute('id');
		
		bodyName = bodyId.substr(5);
		
		navElm = document.getElementById(navIdPrefix + "_" + bodyName);
		
				
		while (navElm && navElm.getAttribute) {
						
			
			if (navElm.getAttribute('id') && navElm.getAttribute('id').substr(0, navIdPrefix.length + 1) == (navIdPrefix + "_")) {
				navElm.setAttribute ("class", navCurrentClass);
				
				
				navElm.className = navCurrentClass;							
							
			
				
			}
			
			navElm =  navElm.parentNode.parentNode;
			
			
		
		}

		
	}
	
}

addLoadListener (setNav);