function windowOpen(URLStr, Name, width, height, scrollType)
{
var left = screen.width/2 - width/2;
var top = screen.height/2 - (height/2)-20;
var Properties = "'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars="+scrollType+",resizable=no,copyhistory=no,width="+width+",height="+height+",left="+left+", top="+top+",screenX="+left+",screenY="+top+"'"
window.open(URLStr,Name,Properties);
}