function OpenPopup(URL, name) { 
var width = 400; 
var height = 300; 
var centerWindow = true; 

var posX = 0; 
var posY = 0;

var windowOptions = ""; 
windowOptions += "width="+width; 
windowOptions += ",height="+height; 
windowOptions += ",resizable=no"; 
windowOptions += ",scrollbars=no"; 
windowOptions += ",menubar=no"; 
windowOptions += ",toolbar=no"; 
windowOptions += ",directories=no"; 
windowOptions += ",location=no"; 
windowOptions += ",status=no";
windowOptions += ",left=no"; 
windowOptions += ",top=no";
if (centerWindow == true) { 
posX = ((screen.availWidth/2)-(width/2)); 
posY = ((screen.availHeight/2)-(height/2)); 
}
windowOptions += ",left=" + posX; 
windowOptions += ",top=" + posY; 
window.open(URL, name, windowOptions); 
}