var windowHeight;
var btnLink = document.getElementById("link");

var setPageHeight = function () {

	if (self.innerHeight) 
		windowHeight = self.innerHeight;
	else if (document.documentElement && document.documentElement.clientHeight) 
		windowHeight = document.documentElement.clientHeight;
	else if (body) 
		windowHeight = body.clientHeight;

	document.body.style.height = windowHeight + "px";

}

window.onresize = function () {
	setPageHeight();
}

setPageHeight();
btnLink.style.top = windowHeight - 42 + "px";

var gaJsHost = (("https:" == document.location.protocol) ? "https://ssl." : "http://www.");
document.write(unescape("%3Cscript src='" + gaJsHost + "google-analytics.com/ga.js' type='text/javascript'%3E%3C/script%3E"));