var Positioner = {
	Header: false,
	Load: function() {
		this.Header = $('header');
		this.Header.style.position = "absolute";
		this.Position();
	},
	Position: function() {
		var ScrH = document.viewport.getHeight();
		var ScrW = document.viewport.getWidth();
		var Width = 0;
		var Height = 0;
		var Top = 0;
		var Left = 0;
		//Header - Middle
		Width = this.Header.getWidth();
		Height = this.Header.getHeight();
		Top = ScrH / 2 - Height / 2;
		if (Top < 0) {
			Top = 0;
		}
		Left = ScrW / 2 - Width / 2;
		this.Header.style.top = Top + "px";
		this.Header.style.left = Left + "px";
		setTimeout("Positioner.Position();", 500);
	}
}
Event.observe(window, 'load', function() {
	Positioner.Load();
})