function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

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_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}





function collapseNavigation()
{
	var navList = document.getElementById('mainNav');
	if ( navList == null ) {
		return;
	}
	
	var navChildren = navList.childNodes;
	// Loop through top level list items
	for (var i = 0; i < navChildren.length; i++) {
		var child = navChildren[i];
		if (child.tagName == 'LI') {
			var subChildren = child.childNodes;
			// Loop through second level list items
			for (var si = 0; si < subChildren.length; si++) {
				var subChild = subChildren[si];
				if ( subChild.tagName == 'UL' && !listHasActiveLink(subChild) ) {
					subChild.style.display = 'none';	
				}
			} // End inner loop
		}
	} // End loop	
} // End func


function listHasActiveLink(navList)
{
	var listChildren = navList.childNodes;
	for (var i = 0; i < listChildren.length; i++) {
		var child = listChildren[i];
		if (child.tagName == 'LI') {
			var subChildren = child.childNodes;
			for (var si = 0; si < subChildren.length; si++) {
				var subChild = subChildren[si];
				if (subChild.tagName == 'A' && subChild.className == 'active') {
					return true;
				}
			} // End inner loop
		}
	} // End loop
	return false;
} // End func