<!--
// viewport
function vpWidth() {
	return window.innerWidth || document.documentElement.clientWidth || document.body.clientWidth;
}
function vpHeight() {
	return window.innerHeight || document.documentElement.clientHeight || document.body.clientHeight;
}

// calcula altura de container
function fixShadowHeight () {
	
	var vpheight = vpHeight();
	var container = document.getElementById("container");
	var container_center = document.getElementById("container-center");
		
	/*alert(vpheight);
	alert(container.offsetHeight);
	alert(container_center.offsetHeight);*/
	if (vpheight > container.offsetHeight) {
		container.style.height = vpheight+"px";
	}
	if (vpheight > container_center.offsetHeight) {
		container_center.style.height = vpheight+"px";
	}
}
-->