var imagesLoaded = 0;

var aboutgaurenne_on = new Image();
aboutgaurenne_on.src = '../Media/nav_aboutgaurenne_on.gif';
var aboutgaurenne_off = new Image();
aboutgaurenne_off.src = '../Media/nav_aboutgaurenne_off.gif';

var aboutdordogne_on = new Image();
aboutdordogne_on.src = '../Media/nav_dordogne_on.gif';
var aboutdordogne_off = new Image();
aboutdordogne_off.src = '../Media/nav_dordogne_off.gif';

var photos_on = new Image();
photos_on.src = '../Media/nav_photos_on.gif';
var photos_off = new Image();
photos_off.src = '../Media/nav_photos_off.gif';

var comments_on = new Image();
comments_on.src = '../Media/nav_comments_on.gif';
var comments_off = new Image();
comments_off.src = '../Media/nav_comments_off.gif';

var contact_on = new Image();
contact_on.src = '../Media/nav_contact_on.gif';
var contact_off = new Image();
contact_off.src = '../Media/nav_contact_off.gif';

var imagesLoaded = 1;

//highlight navigation onload for current section, if necessary
var hiLiteOnLoad;

function rollOn(which) {
	if (document.images && imagesLoaded == true) {
		if (which != navHiLite || hiLiteOnLoad) {
				document.images[which].src = eval(which + '_on.src');
		}	
  } else {
  	return false;   
  }
}

function rollOff(which) {
	if (document.images && imagesLoaded == true) {
		if (which != navHiLite || hiLiteOnLoad) {
				document.images[which].src = eval(which + '_off.src');
		}	
  } else {
  	return false;   
  }
}

function hiLite() {
	if (navHiLite != "") {
		hiLiteOnLoad = true;
		rollOn(navHiLite);
		hiLiteOnLoad = false;
	}
}