if (document.images) {

var overcold = new Image();
overcold.src = "../images/nav_overview_2.gif"
var selcold = new Image();
selcold.src = "../images/images_hof/rt_nav/nav_ind_sel_2.gif"
var sponcold = new Image();
sponcold.src = "../images/images_hof/rt_nav/nav_ind_spon_2.gif"
var subcold = new Image();
subcold.src = "../images/images_hof/rt_nav/nav_ind_sub_2.gif"
var cercold = new Image();
cercold.src = "../images/images_hof/rt_nav/nav_ind_cer_2.gif"

var overhot = new Image();
overhot.src = "../images/images_hof/rt_nav/nav_overview_3.gif"
var selhot = new Image();
selhot.src = "../images/images_hof/rt_nav/nav_ind_sel_3.gif"
var sponhot = new Image();
sponhot.src = "../images/images_hof/rt_nav/nav_ind_spon_3.gif"
var subhot = new Image();
subhot.src = "../images/images_hof/rt_nav/nav_ind_sub_3.gif"
var cerhot = new Image();
cerhot.src = "../images/images_hof/rt_nav/nav_ind_cer_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');
          
          }