function customize() {
    var answer=prompt("Are you more interested in Sun or Netscape?", "Sun")
    if (!answer) return
    anotherWindow=open('', 'newWindow', 
                       'scrollbars=yes, width=250, height=475')
    if (answer == "Sun") {
        anotherWindow.document.writeln("Click to go to Sun's homepage: " + 
                              "Sun".link("http://www.sun.com"))
        anotherWindow.document.close()
    }
    else {
        if (answer == "Netscape") {
                anotherWindow.document.writeln("Click to go to Netscape's 
                homepage: " + "Netscape".link("http://www.netscape.com"))
                anotherWindow.document.close()
      }
      else {
                anotherWindow.document.writeln("Well, if you're not interested
                     in either Sun or Netscape, how about IBM?  " + "IBM".link
                                                ("http://www.austin.ibm.com"))
                anotherWindow.document.close()
      }
    }
}