var START_SSHOT = 0;
var NUM_OF_SSHOTS = 20;
var START_THUMB_ARRAY = 0;
var thumbsetarray = new Array();
var CURR_THUMB_ARRAY = 0;
var CURR_SSHOT = 0;
var baseurl="images/";

function screenObject(bigscreen, caption)	{
	this.bigscreen = baseurl + bigscreen;
	this.caption = baseurl + caption;
};

function thumbSet()	{
	this.screens = new Array();
	for(a=0;a<15;a++)	{
		var thisimage = "ps2_" + (START_SSHOT+1) + ".gif";
		var thiscaption = "caption_" + (START_SSHOT+1) + ".gif";
		this.screens[a] = new screenObject(thisimage, thiscaption);
		START_SSHOT++;
	}
	
	this.image = baseurl+"thumbs_set" + (START_THUMB_ARRAY+1) + ".gif";
};

function createThumbSets()	{
	var starthere = START_SSHOT;
	for(z=0;z<4;z++)	{
		thumbsetarray[START_THUMB_ARRAY] = new thumbSet();
		START_THUMB_ARRAY++;
	}
};

function writeArray()	{
	for(a=0;a<START_THUMB_ARRAY;a++)	{
		for(b=0;b<5;b++)	{
			document.write(thumbsetarray[a].screens[b].caption.src);
			document.write("<BR>");
		}
	}
};

function updateBig(number)	{
	document.images["bigshot"].src = thumbsetarray[CURR_THUMB_ARRAY].screens[number].bigscreen;	

};

function nextThumb()	{
	if(CURR_THUMB_ARRAY<thumbsetarray.length-1)	{
		CURR_THUMB_ARRAY++;
	} else	{
		CURR_THUMB_ARRAY=0;
	}
	document.images["thumbs"].src = thumbsetarray[CURR_THUMB_ARRAY].image;
};