function MM_openBrWindow()	{
				xPos = (screen.availWidth/2-400);
				yPos = (screen.availHeight/2-325);
				mainWindow = window.open('main/riehl.html','riehl','width=800,height=600,toolbar=0,menubar=0,location=0,status=1,resizable=0,scrollbars=0');
				mainWindow.focus();
				mainWindow.moveTo(xPos,yPos);
			}