function checkBrowser()
{
	this.ver=navigator.appVersion;
	this.dom=document.getElementById?1:0;
	this.ie=(document.all)?1:0;
	this.ns=(document.layers)?1:0;
	this.bw=(this.ie || this.ns);
	return this;
}
bw=new checkBrowser();

function PageSize()
{
	this.x=0;this.width=(bw.ns)?innerWidth:document.body.offsetWidth;
	this.y=0;this.height=(bw.ns)?innerHeight:document.body.offsetHeight;
	this.xcenter=this.width/2;	this.ycenter=this.height/2;
}
function Picture(name,prefix,container,alias)
{
	var strAlias;
	var strPrefix;
	if (prefix)
		strPrefix = prefix;
	else
		strPrefix = "tab";
	if (alias)
		strAlias = alias;
	else
		strAlias = name;
		
	container=(!container)?'':container + '.reference.';
	//properties
	this.name = "_" + strAlias;
	this.reference = bw.ie?document.all[strPrefix + "_" + strAlias]:bw.ns?eval(container+'document.'+ strPrefix +"_" + strAlias):0;
	this.onImage = new Image();
	this.onImage.src = "images/" + strPrefix + "_" + name + "_over.jpg";	
	this.offImage = new Image();
	this.offImage.src = "images/" + strPrefix + "_" + name + "_off.jpg";

	//methods
	this.on = Picture_on;
	this.off = Picture_off;
	this.active = false;
}
function Picture_on()
{
	if (!this.active)
	{
		this.active = true;
		this.reference.src = this.onImage.src;
	}
}
function Picture_off()
{
	if (this.active)
	{
		this.active = false;
		this.reference.src = this.offImage.src;
	}
}
function StaticPicture(name,container)
{
	container=(!container)?'':container + '.reference.';
	//properties
	this.name = "_" + name;
	this.reference=bw.ie?document.all[name]:bw.ns?eval(container+'document.'+ name):0;
	this.imageArray = new Array();
	this.nameArray = new Array();
	this.currentImage = -1;

	//methods
	this.change = StaticPicture_change;
	this.load = StaticPicture_load;
	this.next = StaticPicture_next;
	this.previous = StaticPicture_previous;
}
function StaticPicture_change(strimage)
{
	var intCounter = 0;
	var bFound = false;
	for(intCounter = 0;intCounter < this.nameArray.length;intCounter ++)
	{
		if (this.nameArray[intCounter] == strimage)
		{
			bFound = true;
			break;
		}
	}
	if (bFound)
		this.reference.src = this.imageArray[intCounter].src;
}
function StaticPicture_load(strnew)
{
	var intIndex = 0;
	intIndex = this.imageArray.length;
	this.imageArray[intIndex] = new Image();
	this.imageArray[intIndex].src = "images/" + strnew + ".jpg";
	this.nameArray[intIndex] = strnew;
	if (this.currentImage == -1)
		this.currentImage = 0;
}
function StaticPicture_next()
{
	if (this.imageArray.length > 0)
	{
		this.currentImage ++;
		if (this.currentImage >= this.imageArray.length)
			this.currentImage = 0;
		this.reference.src = this.imageArray[this.currentImage].src;
	}
}
function StaticPicture_previous()
{
	if (this.imageArray.length > 0)
	{
		this.currentImage --;
		if (this.currentImage < 0)
			this.currentImage = this.imageArray.length - 1;
		this.reference.src = this.imageArray[this.currentImage].src;
	}
}