function openNewWindow(URLtoOpen,windowName) {
    LeftPos=(screen.width)?(screen.width-400)/2:0;
    TopPos=(screen.height)?(screen.height-260)/2:0;
    newWindow=window.open(URLtoOpen,windowName,'toolbar=no,scrollbars=yes,left='+LeftPos+',top='+TopPos+',width=400,height=260');
}
function openPrinterFriendly(URLtoOpen,windowName) {
    LeftPos=(screen.width)?(screen.width-640)/2:0;
    TopPos=(screen.height)?(screen.height-480)/2:0;
    newWindow=window.open(URLtoOpen,windowName,'toolbar=no,scrollbars=yes,left='+LeftPos+',top='+TopPos+',width=640,height=480');
}
function openIntro(URLtoOpen,windowName) {
    LeftPos=(screen.width)?(screen.width-640)/2:0;
    TopPos=(screen.height)?(screen.height-560)/2:0;
    newWindow=window.open(URLtoOpen,windowName,'toolbar=yes,scrollbars=yes,left='+LeftPos+',top='+TopPos+',width=640,height=560');
}