var x,y;
var heightx,heighty;
var layer;
var show = false;

function init()
{
	if (self.pageYOffset) // all except Explorer
	{
		x = self.pageXOffset;
		y = self.pageYOffset;
	}
	else if (document.documentElement && document.documentElement.scrollTop) // Explorer 6 Strict
	{
		x = document.documentElement.scrollLeft;
		y = document.documentElement.scrollTop;
	}
	else if (document.body) // all other Explorers
	{
		x = document.body.scrollLeft;
		y = document.body.scrollTop;
	}
	
	if (self.innerHeight) // all except Explorer
	{
		heightx = self.innerWidth;
		heighty = self.innerHeight;
	}
	else if (document.documentElement && document.documentElement.clientHeight) // Explorer 6 Strict Mode
	{
		heightx = document.documentElement.clientWidth;
		heighty = document.documentElement.clientHeight;
	}
	else if (document.body) // other Explorers
	{
		heightx = document.body.clientWidth;
		heighty = document.body.clientHeight;
	}
}

function showLayer(name,theImage)
{
	layer = document.getElementById(name);
	layer.innerHTML = '<img src=' +theImage+' width="198" height="280">';
	layer.style.visibility = "visible";
	init();
	layer.style.top = y + heighty/2 - 140;
	layer.style.left = 350;
	show = true;
}

function hideLayer(name)
{
	layer = document.getElementById(name);
	layer.style.visibility = "hidden";
	show = false;
}