$(document).ready(function() {

  // NAVIGATION STATE
  var url = document.location.toString();
  var img_on;
  if ( url.indexOf('/articles') > 0 || url.indexOf('limit=article') > 0 || url.indexOf('limit=editorial') > 0 ) {
    img_on = $("#nav_container .nav_links li a img[alt='ARTICLES']");
  } else if ( url.indexOf('/videos') > 0 || url.indexOf('limit=video') > 0 ) {
    img_on = $("#nav_container .nav_links li a img[alt='VIDEOS']");
  } else if ( url.indexOf('/products') > 0 || url.indexOf('limit=product') > 0 ) {
    img_on = $("#nav_container .nav_links li a img[alt='PRODUCTS']");
  } else if ( url.indexOf('/questions') > 0 || url.indexOf('limit=question') > 0 ) {
    img_on = $("#nav_container .nav_links li a img[alt='ASK THE EXPERT']");
  } else if ( url.indexOf('/galleries') > 0 || url.indexOf('limit=gallery') > 0 ) {
    img_on = $("#nav_container .nav_links li a img[alt='GALLERIES']");
  } else if ( url.indexOf('/accounts') > 0 || url.indexOf('/listings') > 0 || url.indexOf('/directories') > 0 || url.indexOf('limit=listing') > 0 || url.indexOf('/hidden_gems') > 0) {
    img_on = $("#nav_container .nav_links li a img[alt='FIND A SOLUTION']");
  } else {
    img_on = $("#nav_container .nav_links li a img[alt='HOME']");
  }
  img_on.attr("src", img_on.attr("src").replace(".gif", "_on.gif"));
  
});