// Rollover Functionality

// define category-specific nav image names
var topNav = new Array;
mainCat = ["social", "movement", "hand", "cognitive", "hearing", "vision", "language"];


// preload images referencing topNav
var imgOn = new Array;
var imgOff = new Array;
for (var i = 0; i < topNav.length; i++) {
  imgOff[i] = new Image;
  imgOff[i].src = "images/nav_"+topNav[i]+"_off.gif";
  imgOn[i] = new Image;
  imgOn[i].src = "images/nav_"+topNav[i]+"_on.gif";
}

// do rollover
function toggleimg(imgname,state) {
  var ptr = eval("document.images."+imgname);
  ptr.src = "images/nav_"+imgname+"_"+state+".gif";
  // alert(ptr.src);
}

// define category-specific bot nav image names
var botNav = new Array;
mainCat = ["month3", "month7", "year1", "year2", "year3", "year4", "year5"];


// preload images referencing botNav
var imgOn = new Array;
var imgOff = new Array;
for (var i = 0; i < botNav.length; i++) {
  imgOff[i] = new Image;
  imgOff[i].src = "images/botNav_"+botNav[i]+"_off.gif";
  imgOn[i] = new Image;
  imgOn[i].src = "images/botNav"+botNav[i]+"_on.gif";
}

// do rollover
function toggleimg2(imgname,state) {
  var ptr = eval("document.images."+imgname);
  ptr.src = "images/botNav_"+imgname+"_"+state+".gif";
  // alert(ptr.src);
}