/* Begin Jump Menu Script */
function jumpPage(newLoc)
{ newPage = newLoc.options[newLoc.selectedIndex].value
 if (newPage != "") {window.location.href =newPage}
}
/* End Jump Menu Script */

/* Centered pop-window */
var win= null;
function NewWindow(mypage,myname,w,h,scroll)
{ var winl = (screen.width-w)/2;
  var wint = (screen.height-h)/2;
  var settings  ='height='+h+',';
      settings +='width='+w+',';
      settings +='top='+wint+',';
      settings +='left='+winl+',';
      settings +='scrollbars='+scroll+',';
      settings +='resizable=no';
  win=window.open(mypage,myname,settings);
  if(parseInt(navigator.appVersion) >= 4){win.window.focus();}
}

function closeWindow()
{ NewWindow.close()
}
/* End pop-window */

/* Display e-maill address */
site = "ventana.sierraclub";
tld  = ".org";

function WriteEmail(user)
{ document.write('<a href=\"mail' + 'to:' + user + '@' + site + tld + '\">');
  document.write(user + '@' + site + tld + '<\/a>');
}
function WriteEmailName(user, name)
{ document.write('<a href=\"mail' + 'to:' + user + '@' + site + tld + '\">');
  document.write(name + '<\/a>');
}
function WriteEmailOther(user, name, site, tld)
{ document.write('<a href=\"mail' + 'to:' + user + '@' + site + tld + '\">');
  document.write(name + '<\/a>');
}
/* End display e-maill address */

/* Begin Rollover Script */
function newImage(arg)
{ if (document.images)
  { rslt = new Image();
    rslt.src = arg;
    return rslt;
  }
}

function changeImages()
{ if (document.images && (preloadFlag == true))
  { for (var i=0; i<changeImages.arguments.length; i+=2)
    { document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
    }
  }
}

var preloadFlag = false;
function preloadImages()
{ if (document.images)
  { home_but = newImage("/images/home_on.gif");
    issues_but = newImage("/images/issues_on.gif");
    sched_but = newImage("/images/schedule_on.gif");
    chapt_but = newImage("/images/chapter_on.gif");
    join_but = newImage("/images/join_on.gif");
    res_but = newImage("/images/resources_on.gif");
    con_but = newImage("/images/contact_on.gif");
    nat_but = newImage("/images/national_on.gif");
    preloadFlag = true;
  }
}
/* End Rollover Script */