current_overID = "";
last_overID = "";
 
function item (img_name,width,height)
  {
 
img_prefix = img_name;
this.slide_img = new Image (width,height);
this.slide_img.src = img_prefix + ".gif";
  }
 
function new_item (img_name,width,height) 
  {
 
item [img_name] = new item (img_name,width,height);
  }
 
function mouseover (itemID)
  {
current_overID = itemID;
if (current_overID != last_overID) {
document.nav.src = item [current_overID].slide_img.src;
  }
}
 
new_item ("imgs/nav00",750,33);
new_item ("imgs/nav01",750,33);
new_item ("imgs/nav02",750,33);
new_item ("imgs/nav03",750,33);
new_item ("imgs/nav04",750,33);
new_item ("imgs/nav05",750,33);
new_item ("imgs/nav06",750,33);