function window_opener1(w,h,page){

	//ah = available screen height, aw = available screen width
	var ah = screen.availHeight
	var aw = screen.availWidth
	//ph - where the window horizontal top will be positioned to
	//pw - where the window left edge will be positioned to
	var ph = ah/2-(h/2)
	var pw = aw/2-(w/2)
	
	window.open(page,'openedpage','width='+w+',height='+h+',status=no,toolbar=no,menubar=no,location=no,scrollbars=yes,resizable=no,left='+pw+',top='+ph);
}