ns=(document.layers)?true:false;
ns6=(document.getElementById&&!document.all)?true:false;
ie=(document.all)?true:false;

//preload images
var img01 = new Image();
img01.src = "images/topnav_calendar_a.gif"
var img02 = new Image();
img02.src = "images/topnav_communityLinks_a.gif"
var img03 = new Image();
img03.src = "images/topnav_contribute_a.gif"
var img04 = new Image();
img04.src = "images/topnav_contactUs_a.gif"
var img05 = new Image();
img05.src = "images/topnav_employment_a.gif"
var img06 = new Image();
img06.src = "images/topnav_volunteer_a.gif"
var img07 = new Image();
img07.src = "images/topnav_calendar_a.gif"
var img08 = new Image();
img08.src = "images/topnav_calendar_a.gif"
var img09 = new Image();
img09.src = "images/topnav_calendar_a.gif"
var img10 = new Image();
img10.src = "images/sidenav_assistedLiving_a.gif"
var img11 = new Image();
img11.src = "images/sidenav_dayCenter_a.gif"
var img12 = new Image();
img12.src = "images/sidenav_gallandHome_a.gif"
var img13 = new Image();
img13.src = "images/sidenav_history_a.gif"
var img14 = new Image();
img14.src = "images/sidenav_independentLiving_a.gif"
var img15 = new Image();
img15.src = "images/sidenav_legislativeInfo_a.gif"
var img16 = new Image();
img16.src = "images/sidenav_nutritionInfo_a.gif"
var img17 = new Image();
img17.src = "images/sidenav_programs_a.gif"
var img18 = new Image();
img18.src = "images/sidenav_floorPlans_a.gif"
var img19 = new Image();
img19.src = "images/sidenav_summit_a.gif"
var img20 = new Image();
img20.src = "images/sidenav_transportation_a.gif"
var img21 = new Image();
img21.src = "images/sidenav_email_a.gif"


function navRoll(imgName, imgPath, status)  {
  if(document.images)  {
      document[imgName].src = imgPath;
  }
  window.status = status
}