if (document.images) {
   life_enabled = new Image
   life_disabled = new Image
   life_enabled.src = 'images/life-enabled.gif'
   life_disabled.src = 'images/life-disabled.gif'

   work_enabled = new Image
   work_disabled = new Image
   work_enabled.src = 'images/work-enabled.gif'
   work_disabled.src = 'images/work-disabled.gif'

   school_enabled = new Image
   school_disabled = new Image
   school_enabled.src = 'images/school-enabled.gif'
   school_disabled.src = 'images/school-disabled.gif'
}

life_tagline =   "One bald guy, his wife, and a fish named Cotton Eyed Joe (Jo-Jo 5) take on Boston, MA."
work_tagline =   "IBM Lotus Notes 8.0. Enterprise collaboration meets the Eclipse community."
school_tagline = "Systems Design and Management @ MIT. Engineering Management for working professionals."

function enableLifeImage() {
   document.life_image.src=life_enabled.src;
   document.work_image.src=work_disabled.src
   document.school_image.src=school_disabled.src
}

function enableWorkImage() {
   document.work_image.src=work_enabled.src
   document.life_image.src=life_disabled.src;
   document.school_image.src=school_disabled.src
}

function enableSchoolImage() {
   document.school_image.src=school_enabled.src
   document.life_image.src=life_disabled.src;
   document.work_image.src=work_disabled.src
}

function enableMsg(msg) {
   document.getElementById('activity_info').innerHTML = msg;
   Effect.Appear('activity_div', {duration: 1.0, from: 0.0, to: 0.7});
}

function disableMsg() {
   Effect.Fade('activity_div', {duration: 0.2});
}