function openWindow(url, name){
	return openWindow(url, name, document.width, document.height);
}

function openWindow(url, name, width, height){
	return openWindow(url, name, width, height, true);
}

function openWindow(url, name, width, height, center){
	return openWindow(url, name, width, height, true, true);
}

function openWindow(url, name, width, height, center, popUp){
	var left, top;
	if (center){
		left = (window.screen.width - width) / 2;
		top = (window.screen.height - height) / 2;
	}else{
		left = window.screen.left;
		top = window.screen.top;
	}
	return openWindow(url, name, width, height, left, top, popUp);
}

function openWindow(url, name, width, height, left, top, popUp){
	/*if (width == null) width = document.width;
	if (height == null) height = document.height;/*/
	var options = 'left='+left;
	options += ',top='+top;
	if (width != null) options += ',width='+width;
	if (height != null) options += ',height='+height;
	if (popUp) options += ',toolbar=no, scrollbars=no';

	return window.open(url, name, options);
}