function isTriggerKey(el,event){
  if(el.value.length >= 3 && (event.keyCode>47 || event.keyCode==8) || (el.value.length < 3 && event.keyCode==13)|| (el.value.length == 0 && (event.keyCode>47 || event.keyCode==8))){

    return true;
  }else{
    return false;
  }
    
}
function keyPressHandler(el,event) {
      if(event.keyCode == 27){
        new Effect.Fade(el,{duration:0.25});
      }
}
function toggleCheck(el){
  if(el.checked == true){
    el.checked = false;
  }else{
    el.checked = true;
  }
}
function fadeBox() {
    new Effect.Fade(trapWindow,{duration:0.25});
}