var dimensions = document.viewport.getDimensions();

function repositionFixed() {
	var width = 1000;
	var height = 654;
	if ((ie6 != true) && (dimensions.width >= width) && (dimensions.height >= height)) {
		$("topLogo").setStyle({
			marginLeft: "-476px",
			position: "fixed",
			left: "50%"
		});
		/*$("tab").setStyle({
			marginLeft: "-10000px",
			position: "fixed",
			left: "50%"
		});*/
		$("topNav").setStyle({
			marginLeft: "-500px",
			backgroundPosition: "left -77px",
			position: "fixed",
			left: "50%"
		});
	}
}