function onLoad() {
	window.onresize = setMainDivPos;
	window.setMainDivPos();
}

function setMainDivPos() {
	var mainDiv = document.getElementById('nk09mainDiv');

	if(document.documentElement) {
		var posX = (document.documentElement.clientWidth / 2) - 395;
		var posY = (document.documentElement.clientHeight / 2) - 275;
		if(posX < 0)
			posX = 0;
		if(posY < 0)
			posY = 0;
		mainDiv.style.left = posX + "px";
		mainDiv.style.top = posY + "px";
	} else if(document.body) {
		var posX = (document.body.clientWidth / 2) - 395;
		var posY = (document.body.clientHeight / 2) - 275;
		if(posX < 0)
			posX = 0;
		if(posY < 0)
			posY = 0;
		mainDiv.style.left = posX + "px";
		mainDiv.style.top = posY + "px";
	} else if(window.screen) {
		var posX = ((window.screen.availWidth / 2) - 415);
		var posY = ((window.screen.availHeight / 2) - 295);
		if(posX < 0)
			posX = 0;
		if(posY < 0)
			posY = 0;
		mainDiv.style.left = posX + "px";
		mainDiv.style.top = posY + "px";
	}	
}