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];
		}
		setMenueHighlighting();
	}
}

var preloadflag = false;
function preloadimages(numPics) {
	if (document.images) {
/*
		home_over = newImage("images/home-over.gif");
		2007_over = newImage("images/2007-over.gif");
		contact_over = newImage("images/contact-over.gif");
		*/
		preloadflag = true;
	}
	
}

var folderBig = "";
var folderThumbs = "";
var numPics = "";

var thisUrl = "";
thisUrl = document.URL;
var params = thisUrl.split('?');


folderBig = "big_" + params[1];
folderThumbs = "thumbnails_" + params[1];
numPics = params[2];

function setMenueHighlighting() {

var theMenueId = "menue" + params[1];
//alert(theMenueId);
if(document.getElementById(theMenueId) != undefined)
  document.getElementById(theMenueId).src = "images/" + theMenueId + "-over.gif";
else {
  theMenueId = "menuehome";
  document.getElementById(theMenueId).src = "images/" + theMenueId + "-over.gif";
  }
}

function setThumbnails(thisNumPics) {

var picTds = "";
var bigImg = "";
for(var i=1; i <= thisNumPics; i++) {
	bigImg = "\'" + folderBig +"\/" + i + ".jpg\'";
	picTds +='<TD align=\"center\">	<A href=\"javascript:setBigImg(' + bigImg + ')\;\"><IMG src=\"' + folderThumbs +"\/"  + i + '.jpg\" border=\"0\" alt=\"' + i + '\"><\/A>	<\/TD>';
	if(i % 20 == 0)
		picTds += "<\/tr><tr>";
}
document.write(picTds);

}

function setBigImg(imgSrc) {
document.getElementById("bigImg").src = imgSrc;
}




function showImg(direction) {

	var nextImg = ""; 
	var currentImg = document.getElementById("bigImg").src;
	var numberOfImgs = document.getElementById("thumbTable").getElementsByTagName("img").length;
	
	var thisSrc = currentImg.split(".");
	var index = thisSrc.length - 2
	var urlElements = thisSrc[index].split("/");
	
	var imgPosition = urlElements.length -1;
	
	var imgNumber = urlElements[imgPosition];
	
	if(direction == "previous") {
		nextImg = eval(imgNumber) - 1;
	
		if(nextImg == 0)
		nextImg = numberOfImgs;
		nextImg = folderBig +"\/" + nextImg + ".jpg";
	}	
	
	if(direction == "next") {
		nextImg = eval(imgNumber) + 1;
		
		if(nextImg > numberOfImgs)
		nextImg = 1;
		nextImg = folderBig +"\/" + nextImg + ".jpg";
	}
	
	document.getElementById("bigImg").src = nextImg;
}
function toggleMenueItems(item, visible) {
  if(visible) {
    document.getElementById(item).style.display="inline";
  }
  else {
    document.getElementById(item).style.display="none";
  }
}