var newWindow = null;

function openNewWindow(url, width, height)
{
	var fullscreen = false;
	if(width == 0 && height == 0)
	{
		strWidth = 800;
		strHeight = 600;
		fullscreen = true;
	}
	else
	{
		strWidth = width;
		strHeight = height;
	}
	iLeft = (screen.availWidth - strWidth) / 2;
	iTop = (screen.availHeight - strHeight) / 2;
	
	var tools = "";
	if (fullscreen) tools = "resizable,toolbar=yes,location=yes,scrollbars=yes,menubar=yes,width="+strWidth+",height="+strHeight+",left="+iLeft+",top="+iTop;
	else tools = "resizable,toolbar=no,location=no,scrollbars=yes,width="+strWidth+",height="+strHeight+",left="+iLeft+",top="+iTop;
	newWindow = window.open(url, 'newWin', tools);
	newWindow.focus();
}