function getClientAreaHeight() {
	if(window.ActiveXObject && !window.XMLHttpRequest) {
	// <= IE6
	return document.body.clientHeight;
	}
	else if(window.ActiveXObject && window.XMLHttpRequest) {
	// IE7
	return document.documentElement.clientHeight;
	}
	else {
	// Inne niż IE
	return self.innerHeight;
	}
}

function centerSplash() {
var margin = Math.floor((getClientAreaHeight() - 80) / 2);
document.getElementById('splash').style.margin = margin + 'px auto ' + margin + 'px 0';
}