if (document.images) {


var inductcold = new Image();
inductcold.src = "../images/images_hof/rt_nav/nav_hall_induct_2.gif"
var invchcold = new Image();
invchcold.src = "../images/images_hof/rt_nav/nav_hall_invch_2.gif"
var searchcold = new Image();
searchcold.src = "../images/images_hof/rt_nav/nav_hall_search_2.gif"
var overcold = new Image();
overcold.src = "../images/nav_overview_2.gif"
var museumcold = new Image();
museumcold.src = "../images/images_hof/rt_nav/nav_hall_museum_2.gif"

var inducthot = new Image();
inducthot.src = "../images/images_hof/rt_nav/nav_hall_induct_3.gif"
var invchhot = new Image();
invchhot.src = "../images/images_hof/rt_nav/nav_hall_invch_3.gif"
var searchhot = new Image();
searchhot.src = "../images/images_hof/rt_nav/nav_hall_search_3.gif"
var overhot = new Image();
overhot.src = "../images/images_hof/rt_nav/nav_overview_3.gif"
var museumhot = new Image();
museumhot.src = "../images/images_hof/rt_nav/nav_hall_museum_3.gif"

}

 function hot(imgName) {
 
           if (document.images) 
            document.images[imgName].src = eval(imgName + 'hot.src');
          
          }

 function cold(imgName) {
          
           if (document.images)
            document.images[imgName].src = eval(imgName + 'cold.src');
          
          }