if (document.images) {
     nav1 = new Image
     nav1a = new Image

     nav1.src = 'c/n1a.gif'
     nav1a.src = 'c/n1.gif'
     
     nav2 = new Image
     nav2a = new Image

     nav2.src = 'c/n2a.gif'
     nav2a.src = 'c/n2.gif'
     
     nav3 = new Image
     nav3a = new Image

     nav3.src = 'c/n3a.gif'
     nav3a.src = 'c/n3.gif'
     
     nav4 = new Image
     nav4a = new Image

     nav4.src = 'c/n4a.gif'
     nav4a.src = 'c/n4.gif'
     
     nav5 = new Image
     nav5a = new Image

     nav5.src = 'c/n5a.gif'
     nav5a.src = 'c/n5.gif'
     
     nav6 = new Image
     nav6a = new Image

     nav6.src = 'c/n6a.gif'
     nav6a.src = 'c/n6.gif'
     
     nav7 = new Image
     nav7a = new Image

     nav7.src = 'c/n7a.gif'
     nav7a.src = 'c/n7.gif'
     
     nav8 = new Image
     nav8a = new Image

     nav8.src = 'c/n8a.gif'
     nav8a.src = 'c/n8.gif'
     
     nav9 = new Image
     nav9a = new Image

     nav9.src = 'c/n9a.gif'
     nav9a.src = 'c/n9.gif'
     
     nav10 = new Image
     nav10a = new Image

     nav10.src = 'c/n10a.gif'
     nav10a.src = 'c/n10.gif'
     
     nav11 = new Image
     nav11a = new Image

     nav11.src = 'c/n11a.gif'
     nav11a.src = 'c/n11.gif'
     
     nav12 = new Image
     nav12a = new Image

     nav12.src = 'c/n12a.gif'
     nav12a.src = 'c/n12.gif'
     
     nav13 = new Image
     nav13a = new Image

     nav13.src = 'c/n13a.gif'
     nav13a.src = 'c/n13.gif'
     
     nav14 = new Image
     nav14a = new Image

     nav14.src = 'c/n14a.gif'
     nav14a.src = 'c/n14.gif'
     
     nav15 = new Image
     nav15a = new Image

     nav15.src = 'c/n15a.gif'
     nav15a.src = 'c/n15.gif'
     
     nav16 = new Image
     nav16a = new Image

     nav16.src = 'c/n16a.gif'
     nav16a.src = 'c/n16.gif'
     
     nav17 = new Image
     nav17a = new Image

     nav17.src = 'c/n17a.gif'
     nav17a.src = 'c/n17.gif'
     
     nav18 = new Image
     nav18a = new Image

     nav18.src = 'd/start31a.gif'
     nav18a.src = 'd/start31.gif'
     
     nav19 = new Image
     nav19a = new Image

     nav19.src = 'd/start32a.gif'
     nav19a.src = 'd/start32.gif'
 }