function showInfo(url, windowName, width, height){
	
	var win 		= null;
	var settings 	= "";
	
	leftOffset = (screen.width) ? (screen.width - width) / 2 : 100;
	topOffset = (screen.height) ? (screen.height - height) / 2 : 100;
	
	settings += "width=" 	+ width; 
	settings += ",height=" 	+ height; 
	settings += ",top=" 	+ topOffset;
	settings += ",left=" 	+ leftOffset; 
	settings += ",scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no";
	
	win = window.open(url, windowName, settings);
	win.focus();
}