function openWindow(name,height,width) { 
	self.name = "main";
	features = 
	'toolbar=no,location=no,directories=no,status=no,menubar=no,' +
	'scrollbars=no,resizable=no,width='+width+',height='+height+',left="50,top=10' 
	dlg = window.open ('',name,features) 
}