var knas = {
	metro_map: function(url) {
		var w = 650;
		var h = 750;
		var x = (screen.width/2)-(w/2);
		var y = (screen.height/2)-(h/2);
		
		var param = 'left='+x+', top='+y+', height='+h+', width='+w+', scrollbars=yes, resizable=yes,location=no';
		window.open(url, 'metro_map', config=param).focus();
	},
	apartment: function(url) {
		var w = 950;
		var h = 750;
		var x = (screen.width/2)-(w/2);
		var y = (screen.height/2)-(h/2);
		
		var param = 'left='+x+', top='+y+', height='+h+', width='+w+', scrollbars=yes, resizable=yes,location=no';
		window.open(url, '_blank', config=param).focus();
	}
};