browser_name = navigator.appName;
browser_version = parseFloat(navigator.appVersion); 

var roll = 'false';
if (browser_name == "Netscape" && browser_version >= 3.0) 
   { roll = 'true'; }
else if (browser_name == "Microsoft Internet Explorer" && browser_version >= 4.0) 
   { roll = 'true'; }
else { roll = 'false'; }

function Hover(img01,ref01,img02,ref02,img03,ref03,img04,ref04,img05,ref05,
               img06,ref06,img07,ref07,img08,ref08,img09,ref09,img10,ref10, 
               img11,ref11,img12,ref12,img13,ref13,img14,ref14,img15,ref15,
               img16,ref16,img17,ref17,img18,ref18,img19,ref19,img20,ref20, 
               img21,ref21,img22,ref22,img23,ref23,img24,ref24,img25,ref25, 
               img26,ref26,img27,ref27,img28,ref28,img29,ref29,img30,ref30) 
{ 
  if (roll == 'true') { 
    if (img01!=null) document.images[img01].src = ref01; 
    if (img02!=null) document.images[img02].src = ref02; 
    if (img03!=null) document.images[img03].src = ref03; 
    if (img04!=null) document.images[img04].src = ref04; 
    if (img05!=null) document.images[img05].src = ref05; 
    if (img06!=null) document.images[img06].src = ref06; 
    if (img07!=null) document.images[img07].src = ref07; 
    if (img08!=null) document.images[img08].src = ref08; 
    if (img09!=null) document.images[img09].src = ref09; 
    if (img10!=null) document.images[img10].src = ref10; 
    if (img11!=null) document.images[img11].src = ref11; 
    if (img12!=null) document.images[img12].src = ref12; 
    if (img13!=null) document.images[img13].src = ref13; 
    if (img14!=null) document.images[img14].src = ref14; 
    if (img15!=null) document.images[img15].src = ref15; 
    if (img16!=null) document.images[img16].src = ref16; 
    if (img17!=null) document.images[img17].src = ref17; 
    if (img18!=null) document.images[img18].src = ref18; 
    if (img19!=null) document.images[img19].src = ref19; 
    if (img20!=null) document.images[img20].src = ref20; 
    if (img21!=null) document.images[img21].src = ref21; 
    if (img22!=null) document.images[img22].src = ref22; 
    if (img23!=null) document.images[img23].src = ref23; 
    if (img24!=null) document.images[img24].src = ref24; 
    if (img25!=null) document.images[img25].src = ref25; 
    if (img26!=null) document.images[img26].src = ref26; 
    if (img27!=null) document.images[img27].src = ref27; 
    if (img28!=null) document.images[img28].src = ref28; 
    if (img29!=null) document.images[img29].src = ref29; 
    if (img30!=null) document.images[img30].src = ref30; 
  } 
}