///////////////////////////////////////////////////////////////////
////
//// website utilities - A.R. Galiano ( galiano@optonline.com )
////
///////////////////////////////////////////////////////////////////

///////////////////////////////////////////////////////////////////
//// Turn pop-up announcements on and off
//// 1 = on
//// 0 = off 

var announce_on = 0 ;

///////////////////////////////////////////////////////////////////

function DoStuff()

    {
    if ( BrowserCheck() ) return ;
    if ( announce_on ) Announce() ;
    }

///////////////////////////////////////////////////////////////////

function BrowserCheck()
    {
    //// acceptable browsers:
    if( navigator.appName == "Microsoft Internet Explorer" && parseFloat(navigator.appVersion) >= 4.0) return 0 ;
    if( navigator.appName == "Netscape" && parseFloat(navigator.appVersion) >= 5.0) return 0 ;

    //// reject the rest:
    ////alert( "This website requires MS Internet Explorer 5.0+ or Netscape 6.0+\n\nPlease upgrade your browser." ) ;
    window.location.replace( "http://www.njscuba.com/miscellaneous/upgrade_browser.html" ) ;
    return 1 ;
    }

///////////////////////////////////////////////////////////////////
////once-per-session Announcement

function Announce() 
  {
  if ( document.cookie ) return  ; 
  document.cookie = "popup_session" ;
  fname = "http://www.njscuba.com/charter_info/announcements.html" ;
  window.open( fname, "_blank", "" ) ;
  //this.location.href = fname ;
  }