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 MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
function popup (URL, w, h) {
	var putItThere = null; 
	var chasm = screen.availWidth;
	var mount = screen.availHeight;
	var ie = /msie/i;
	var windowName = 'btapopup' + Math.floor(Math.random()*100);

	var features =
		'width=' + w + 
		',height=' + h + 
		',left=' + ((chasm - w - 10) * .5) + 
		',top=' + ((mount - h - 150) * .5) + 
		',directories=no' +
		',location=no' +
		',menubar=no' +
		',scrollbars=no' +
		',status=no' +
		',toolbar=no' +
		',resizable=no';
	
	if (!new_window) 
	{
		var new_window = window.open (URL, windowName, features);
		if (new_window) new_window.focus();
	}
}
var img = 0;
function nextImage() {
	img++;
	if (img == total) img = 0;
	// show this image, hide all other image layers
	for (var i=0; i<total; i++) {
		if (i == img)
			MM_showHideLayers('lyrimg'+i,'','show');
		else
			MM_showHideLayers('lyrimg'+i,'','hide');
	}
	updateImage();
}
function nextItem() {
	var f = MM_findObj("frmmenu");
	f.b.selectedIndex++;
	f.submit();
}
function updateBkgd() {
	MM_swapImage('bkgd','','../admin/uploadedImages/' + bkgdImageFile,1);
}
function updateImage() {
	MM_swapImage('img'+img,'','../admin/uploadedImages/'+img_sm[img],1);
}
var page = 0;
function nextPage(add) {
	if (add) {
		if (page<totalPages-1) page++;
	} else {
		if (page > 0) page--;
	}
	
	updatePage();
}
function updatePage() {
	if (page == totalPages-1)
		MM_swapImage('scrolldown','','images/spacer.gif',1);
	else
		MM_swapImage('scrolldown','','images/scroll_down.gif',1);
	
	if (page == 0)
		MM_swapImage('scrollup','','images/spacer.gif',1);
	else
		MM_swapImage('scrollup','','images/scroll_up.gif',1);

	// show this page, hide all other page layers
	for (var i=0; i<totalPages; i++) {
		if (i == page)
			MM_showHideLayers('lyrpage'+i,'','show');
		else
			MM_showHideLayers('lyrpage'+i,'','hide');
	}
}
function showScrim(show) {
	if (show)
		MM_showHideLayers('lyrinfo','','show','lyrimg'+img,'','hide');
	else
		MM_showHideLayers('lyrinfo','','hide','lyrimg'+img,'','show');
}
function popupImage() {
	var width = 533; var height = 299;
	popup("image.html?file="+img_lrg[img]+"&width="+width+"&height="+height, width, height);
}
function popupVideo(file, width, height) {
	popup("video.html?file="+file+"&width="+width+"&height="+height, width, height);
}
function chooseMenu(menu) {
	var f = MM_findObj("frmmenu");
	if (menu == 'a') {
		if (getValue(f.a) == 0) {
			setValue(f.a, a_orig);
			return;
		}
		setValue(f.b, 0);
		setValue(f.c, 0);
	} else if (menu == 'b') {
		if (getValue(f.b) == 0) {
			setValue(f.b, b_orig);
			return;
		}
		setValue(f.c, 0);
	} else {
		if (getValue(f.c) == 0) {
			setValue(f.c, c_orig);
			return;
		}
	}
	f.submit();
}
function getValue(inpt) {
	return inpt.options[inpt.selectedIndex].value;
}
function setValue(inpt, val) {
	if (inpt.type == 'hidden')
		inpt.value = val;
	else {
		for (var i=0; i<inpt.options.length; i++) {
			if (inpt.options[i].value == val) {
				inpt.selectedIndex = i;
				break;
			}
		}
	}
}