//Layer Roll Over Side Global Navigation
function Flrosgn(Slrosgn_c,Slrosgn_v){
 switch(Slrosgn_c){
  case 0:Slrosgn_i=12; Slrosgn_e=".gif"; Slrosgn_n=Slrosgn_v; Slrosgn_l="sgn";
  Slrosgn_p="http://www.rcast.u-tokyo.ac.jp/en/img/";
  Oisgna=new Array(); Oisgnb=new Array(); Oisgnc=new Array();
  for(var i=1;i<=Slrosgn_i;++i){
   Oisgna[i]=new Image(); Oisgnb[i]=new Image(); Oisgnc[i]=new Image();
   Oisgna[i].src=Slrosgn_p+Slrosgn_n+i+"a"+Slrosgn_e;
   Oisgnb[i].src=Slrosgn_p+Slrosgn_n+i+"b"+Slrosgn_e;
   Oisgnc[i].src=Slrosgn_p+Slrosgn_n+i+"c"+Slrosgn_e;
  } break;
  case 1:
  if(Scb_f){document.layers[Slrosgn_l].document.images[Slrosgn_n+Slrosgn_v].src=Oisgnb[Slrosgn_v].src;}
  else{document.images[Slrosgn_n+Slrosgn_v].src=Oisgnb[Slrosgn_v].src;} break;
  case 2:
  if(Scb_f){document.layers[Slrosgn_l].document.images[Slrosgn_n+Slrosgn_v].src=Oisgna[Slrosgn_v].src;}
  else{document.images[Slrosgn_n+Slrosgn_v].src=Oisgna[Slrosgn_v].src;} break;
  case 3:
  if(Scb_f){document.layers[Slrosgn_l].document.images[Slrosgn_n+Slrosgn_v].src=Oisgnc[Slrosgn_v].src;}
  else{document.images[Slrosgn_n+Slrosgn_v].src=Oisgnc[Slrosgn_v].src;} break;
 }
}
Flrosgn(0,"sgnb");