Javascript Code:

function OpenReservation()

{

var x_left = (screen.width)/2 - 450;

var y_top = (screen.height)/2 - 340;

var strUrl="Contents/LayoutIndex.aspx?ID=13392009616";

var WinOpen = window.open(strUrl,"newwin","width=900, height=632, left=" + x_left + ", top=" + y_top + ", help=no, location=no, directories=no, resizable=no, status=no, scrollbars=no, toolbar=no, menubar=no")

}