function open_w(url)
	{
    var ah = screen.availHeight;
    var aw = screen.availWidth;
	
	var height = 530;
	var width =  790;
  
	var str = "scrollbars=yes,resizable=no,menubar=no,status=no," + "height=" + height + ",innerHeight=" + height;
  	str += ",width=" + width + ",innerWidth=" + width;
	
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;

    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;

	window.open(url, 'new', str);
	}
	
	function open_femmes(url)
	{
    var ah = screen.availHeight;
    var aw = screen.availWidth;
	
	var height = 280;
	var width =  370;
  
	var str = "scrollbars=no,resizable=no,menubar=no,status=no," + "height=" + height + ",innerHeight=" + height;
  	str += ",width=" + width + ",innerWidth=" + width;
	
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;

    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;

	window.open(url, 'new', str);
	}
		function open_sketch(url)
	{
    var ah = screen.availHeight;
    var aw = screen.availWidth;
	
	var height = 281;
	var width =  400;
  
	var str = "scrollbars=no,resizable=no,menubar=no,status=no," + "height=" + height + ",innerHeight=" + height;
  	str += ",width=" + width + ",innerWidth=" + width;
	
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;

    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;

	window.open(url, 'new', str);
	}
	
	function open_noel(url)
	{
    var ah = screen.availHeight;
    var aw = screen.availWidth;
	
	var height = 379;
	var width =  480;
  
	var str = "scrollbars=no,resizable=no,menubar=no,status=no," + "height=" + height + ",innerHeight=" + height;
  	str += ",width=" + width + ",innerWidth=" + width;
	
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;

    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;

	window.open(url, 'fen', str);
	}
			function open_sketch2(url)
	{
    var ah = screen.availHeight;
    var aw = screen.availWidth;
	
	var height = 440;
	var width =  468;
  
	var str = "scrollbars=yes,resizable=no,menubar=no,status=no," + "height=" + height + ",innerHeight=" + height;
  	str += ",width=" + width + ",innerWidth=" + width;
	
    var xc = (aw - width) / 2;
    var yc = (ah - height) / 2;

    str += ",left=" + xc + ",screenX=" + xc;
    str += ",top=" + yc + ",screenY=" + yc;

	window.open(url, 'new', str);
	}