function getWindowHeight() {
if (self.innerHeight)
{
	return self.innerHeight;
}
else if (document.documentElement && document.documentElement.clientHeight)
{
	return document.documentElement.clientHeight;
}
else if (document.body)
{
	return document.body.clientHeight;
}
}
function setFooter() {
var ch = document.getElementById("wrapper").offsetHeight;
var wh = getWindowHeight();
var f = document.getElementById("footer-container");
var cr = document.getElementById("customer-reviews");
var pr = document.getElementById("product-review-table");
f.style.position = 'relative';
	f.style.top = wh + ch + f.style.height + "px";
}