//GLOBALS

var nl = "\n";			// new line, for nice code :-)

var imgFolder = 'large';	//folder with subfolders that contain big images
var smallFolder = 'small';	//folder with subfolders that contain small images (thumbnails)

var imgName = 'photo';		//image name (e.g. the first image is photo-001 - or if you change name to "image" then the first image name is image-001)

var imgExt = 'jpg';		//extension (filetype) for big images
var smallExt = 'jpg';		//extension (filetype) for small images

var setColumns = 5;		// how many columns per page
var setRows = 0;		// how many rows to skip before scroll starts, check and adjust manually
var setHeight = 100+5+5;	// this is important for scroller: max small image (thumbnail) height + <td> padding-top + <td> padding-bottom (see css file)

//GLOBALS - GALLERY FOLDERS ('<folder>', <number of images>)

var setFolders = Array (
		Array('Exterior Gallery',52),
		Array('Interior Gallery',54)

);

//GALLERY FUNCTIONS

function leadingZero(getImage){

		if (getImage < 10)setImage = "00" + getImage;
		if (getImage > 9 && getImage < 100)setImage = "0" + getImage;
		if (getImage > 99)setImage = getImage;

		return setImage;
}
function initGallery(){

	showGallery(0,setFolders[0][1],setFolders[0][0]);

}	
function showMenu(){

	returnData = '<tr><td class="tdjs" id="menu" colspan="'+ setColumns +'"> | ';

	for (getFolder = 0; getFolder < setFolders.length; getFolder++){
		returnData += '<a class="ajs" href="javascript:showGallery(0,'+setFolders[getFolder][1]+',\''+setFolders[getFolder][0]+'\')">'+setFolders[getFolder][0]+'</a> | ';
	}
	
	returnData += '</td></tr>'+nl;
	
	return returnData;	
	
}
function showGallery(getImage,maxImages,setFolder){
	
	i = 0;

	setScroll = Math.round(getImage / setColumns)-setRows;
	if (setScroll < 0)setScroll = 0;
	setScroll = setScroll*setHeight;

	returnData = '<table class="tablejs">'+nl;
	returnData += '<tr><td id="header" class="tdjs" colspan="'+ setColumns +'">Gallery</td></tr>'+nl;
	returnData += showMenu();
	returnData += '<tr><td id="title"  class="tdjs" colspan="'+ setColumns +'">'+ setFolder +'</td></tr>'+nl;
	
	for (displayImage = 1; displayImage <= maxImages; displayImage++){
		
		i++;
		
		setImage = leadingZero(displayImage);
		
		if (i == 1)returnData += '<tr>'+nl;
		
		setClass = '';
		if (displayImage == getImage)setClass = ' class="selected"';
			
		returnData += '<td  class="tdjs" id="image" '+ setClass +'>';
		returnData += '<a href="javascript:showImage('+ displayImage +','+ maxImages +',\''+ setFolder +'\')"><img src="'+ smallFolder +'/'+ setFolder +'/'+ imgName +'-'+ setImage +'.'+ smallExt +'"></a>'+nl;
		returnData += '</td>';
		if (i == setColumns){
			returnData += '</tr>'+nl;
			i = 0;
		}
	}
	
	if (i > 0)returnData += '<td class="tdjs" colspan="'+ (setColumns - i) +'"></td>'+ nl +'</tr>'+nl;

	returnData += '<tr><td id="footer" class="tdjs" colspan="'+ setColumns +'"><a href="http://www.consoriana.com">Consoriana</a> Javascript Gallery</td></tr>'+nl;
	returnData += '</table>'+nl;

	writeData(returnData,setScroll);
}
function showImage(getImage,maxImages,setFolder){
	
	setImage = leadingZero(getImage);

	imgNxt = getImage + 1;
	imgPre = getImage - 1;
	
	if (imgNxt > maxImages)imgNxt = 1;
	if (imgPre < 1)imgPre = maxImages;

	returnData = '<table class="tablejs">'+nl;
	returnData += '<tr id="selector">'+nl;
	returnData += '<td class="tdjs"><a class="ajs" href="javascript:showImage('+ imgPre +','+ maxImages +',\''+ setFolder +'\')">previous</a></td>'+nl;
	returnData += '<td align="center" class="tdjs"><a class="ajs" href="javascript:showGallery('+ getImage +','+ maxImages +',\''+ setFolder +'\')">close</a></td>'+nl;
	returnData += '<td align="right" class="tdjs"><a class="ajs" href="javascript:showImage('+ imgNxt +','+ maxImages +',\''+ setFolder +'\')">next</a></td>'+nl;
	returnData += '</tr>'+nl;
	returnData += '<tr><td colspan="3" class="tdjs"><a class="ajs" href="javascript:showGallery('+ getImage +','+ maxImages +',\''+ setFolder +'\')"><img src="'+ imgFolder +'/'+ setFolder +'/'+ imgName +'-'+ setImage +'.'+ imgExt +'"></a></td></tr>'+nl;
	returnData += '<tr id="selector"><td colspan="3" class="tdjs">'+ getImage +' / '+ maxImages +'</td></tr>'+nl;
	returnData += '</table>'+nl;
	
	writeData(returnData,0);
}
function writeData(returnData,setScroll){
	
	document.getElementById('gallery').innerHTML = returnData;
	scrollTo(0,setScroll);

}

//START

initGallery();