//////////////////////////////////////
// Roll-Over Menu Navigation System
//
// Written: Dave Burke
// Date:    22 July 2000
//
//////////////////////////////////////

menuItem = new Array(); // stores names of and images
var nItemIndex = 0; // number of menu items

// This function loads all images first
function InitMenu(name, off, on)
{
   menuItem[nItemIndex] = new Array(4);  
   menuItem[nItemIndex][0] = name;
   
   menuItem[nItemIndex][1] = new Image();
   menuItem[nItemIndex][2] = new Image();

   menuItem[nItemIndex][1].src = off;
   menuItem[nItemIndex][2].src = on;

   nItemIndex++;
}


// Called when mouse moves over an item
function MenuItemOn(name)
{
   for(i=0;i<nItemIndex;i++)
   {
      // Find match       
      if (name == menuItem[i][0])
      {
         document.images[menuItem[i][0]].src = menuItem[i][2].src;        
         break;
      }      
   } 
}


// Called when mouse moves off an item
function MenuItemOff(name)
{
   for(i=0;i<nItemIndex;i++)
   {
      // Find match       
      if (name == menuItem[i][0])
      {
         document.images[menuItem[i][0]].src = menuItem[i][1].src;        
         break;
      }            
   }
}