var tourPlace = 0;
var hiddenElement1;
var visibleElement1;

function arrayIndexOf(str,arr) {
	var i = 0;
	while (str != arr[i] && i < arr.length) {
		i++;
	}
	
	if (i == arr.length) {
		return -1;
	} else {
		return i;
	}
}

function layerSwitch(hidden1, visible1) {
	document.getElementById(hidden1).style.display = 'none';
	document.getElementById(visible1).style.display = 'block';
}

function nextTourElement( ) {
	var place;
	place = tourPlace + 1;
	if (place >= tourImageArray.length) {
		place = 0;
	}
	
	getTourElement(place);
}

function prevTourElement( ) {
	var place;
	place = tourPlace - 1;
	if (place < 0) {
		place = tourImageArray.length - 1;
	}
	
	getTourElement(place);
}

function getTourElement(argPlace) {
	hiddenElement1 = tourImageArray[tourPlace];
	
	tourPlace = argPlace;
	
	visibleElement1 = tourImageArray[argPlace];
	
	layerSwitch(hiddenElement1, visibleElement1);
}

function goToTourElement(elementName) {
	place = arrayIndexOf(elementName,tourImageArray);
	if (place >=0 ) {
		getTourElement(place);
	}
}

/*
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_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_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];}
}

*/