// JavaScript Document

//global variable
var galleryLength;

function setlength(galLength){
	galleryLength = galLength;
}
	

function preview(img, x) {
	//Variables
	//NOTE - localhost $pathToImages = "/Images/Photography/"
	//NOTE - server $pathToImages = "/Images/Photography/Originals/"
	path = "Images/Photography/Originals/";
	
	//set image
	img = path + img;
	
	//show dimmer
	document.getElementById('dimbg').style.visibility="visible";
	
	//show picture
	document.getElementById('imgdiv').style.visibility="visible";
	document.getElementById('image').src = img;
	document.getElementById('image').name = x;
							
	
}

function close(){
	document.getElementById('imgdiv').style.visibility="hidden";
}

function previous(imgid) {
	
	//logic
	if (imgid == 1) {
	newid = 1;
	newimg = document.getElementById(newid).name;
	}
	else {
		newid = imgid - 1;
		newimg = document.getElementById(newid).name;
	}
	
	//call preview
	preview(newimg, newid);

}


function next(imgid) {
	newid = imgid * 1;
	
	if (imgid == galleryLength) {
		newid = galleryLength;
		newimg = document.getElementById(newid).name;
	}
	else {
		newid = newid + 1;
		newimg = document.getElementById(newid).name;
	}
	
	preview(newimg, newid);

}