function turnNavOn () {
	if (thisPage != "")
		changeImages(thisPage,"gr/navbar/" + thisPage + "_on.gif");
}

var isPrev = thisPic > 1;
var isNext = thisPic < totalPics;

function turnPicLinksOn () {
	if (totalPics != -1) {
		if (isPrev) {
			changeImages("previous","gr/pictures/previous.gif");
			changeImages("betwPrevNext","gr/pictures/betwPrevNext_onlyPrev.gif");
		}
		if (isNext) {
			changeImages("next","gr/pictures/next.gif");
			if (isPrev)
				changeImages("betwPrevNext","gr/pictures/betwPrevNext.gif");
			else
				changeImages("betwPrevNext","gr/pictures/betwPrevNext_onlyNext.gif");
		}
	}
}

function mouseOverNav (section) {
	var newImg = "gr/navbar/" + section;
	if (thisPage == section) newImg += "_on";
	newImg += "_over.gif";
	changeImages(section,newImg);
	return true;
}

function mouseOutNav (section) {
	var newImg = "gr/navbar/" + section;
	if (thisPage == section) newImg += "_on";
	newImg += ".gif";
	changeImages(section,newImg);
	return true;
}

function popup_pic(url,w,h) {
	w = w + 15;
	h = h + 15;
	pic = window.open("popupPic.html?" + url,"pic","toolbar=0,location=0,directories=0,status=1,menubar=1,scrollbars=auto,width=" + w + ",height=" + h + ",resizable=yes");
	pic.focus();
}

function newImage(arg) {
	if (document.images) {
		rslt = new Image();
		rslt.src = arg;
		return rslt;
	}
}

function changeImages() {
	if (document.images && (preloadFlag == true)) {
		for (var i=0; i<changeImages.arguments.length; i+=2) {
			document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
		}
	}
}

var preloadFlag = false;
function preloadImages() {
	if (document.images) {
		journal_on = newImage("gr/navbar/journal_on.gif");
		journal_over = newImage("gr/navbar/journal_over.gif");
		journal_on_over = newImage("gr/navbar/journal_on_over.gif");
		pictures_on = newImage("gr/navbar/pictures_on.gif");
		pictures_over = newImage("gr/navbar/pictures_over.gif");
		pictures_on_over = newImage("gr/navbar/pictures_on_over.gif");
		stats_on = newImage("gr/navbar/stats_on.gif");
		stats_over = newImage("gr/navbar/stats_over.gif");
		stats_on_over = newImage("gr/navbar/stats_on_over.gif");
		itinerary_on = newImage("gr/navbar/itinerary_on.gif");
		itinerary_over = newImage("gr/navbar/itinerary_over.gif");
		itinerary_on_over = newImage("gr/navbar/itinerary_on_over.gif");
		contact_over = newImage("gr/navbar/contact_over.gif");
		gasMoney_on = newImage("gr/navbar/gasMoney_on.gif");
		gasMoney_over = newImage("gr/navbar/gasMoney_over.gif");
		gasMoney_on_over = newImage("gr/navbar/gasMoney_on_over.gif");

		previous_over = newImage("gr/pictures/previous_over.gif");
		betwPrevNext_onlyNext = newImage("gr/pictures/betwPrevNext_onlyNext.gif");
		betwPrevNext_onlyPrev = newImage("gr/pictures/betwPrevNext_onlyPrev.gif");
		betwPrevNext_overNext = newImage("gr/pictures/betwPrevNext_overNext.gif");
		betwPrevNext_overPrev = newImage("gr/pictures/betwPrevNext_overPrev.gif");
		betwPrevNext_overNextOnly = newImage("gr/pictures/betwPrevNext_overNextOnly.gif");
		betwPrevNext_overPrevOnly = newImage("gr/pictures/betwPrevNext_overPrevOnly.gif");
		next_over = newImage("gr/pictures/next_over.gif");
		backToIndex_over = newImage("gr/pictures/backToIndex_over.gif");
		preloadFlag = true;
	}
}

function di(id,name){
  if (document.images) {document.images[id].src=eval(name+".src"); }
}
// function that displays status bar message

function dm(msgStr) {
  document.returnValue = false;
  if (document.images) { 
     window.status = msgStr;
     document.returnValue = true;
  }
}
var showMsg = navigator.userAgent != "Mozilla/4.0 (compatible; MSIE 4.0; Mac_PowerPC)";
function dmim(msgStr) {
  document.returnValue = false;
  if (showMsg) { 
    window.status = msgStr;
    document.returnValue = true;
  }
}

function init () {
	preloadImages();
	turnNavOn();
//	turnPicLinksOn();
}