function mouse_click(which) {
	switch(which){
	  case 1:document.images["grille"].src="images-grille/wagon-r/wagon-r_grille01big.jpg";return false;

	  case 2:document.images["grille"].src="images-grille/wagon-r/wagon-r_grille02big.jpg";return false;
	  case 3:document.images["grille"].src="images-grille/wagon-r/wagon-r_grille03big.jpg";return false;
	  case 4:document.images["grille"].src="images-grille/wagon-r/wagon-r_grille04big.jpg";return false;
	  case 5:document.images["grille"].src="images-grille/wagon-r/wagon-r_grille05big.jpg";return false;
	  case 6:document.images["grille1"].src="images-grille/life/life_grille01big.jpg";return false;
	  case 7:document.images["grille1"].src="images-grille/life/life_grille02big.jpg";return false;
	  case 8:document.images["grille1"].src="images-grille/life/life_grille03big.jpg";return false;
	  case 9:document.images["grille1"].src="images-grille/life/life_grille04big.jpg";return false;
	  case 10:document.images["grille1"].src="images-grille/life/life_grille05big.jpg";return false;
	  case 11:document.images["grille2"].src="images-grille/move/move_grille01big.jpg";return false;
	  case 12:document.images["grille2"].src="images-grille/move/move_grille02big.jpg";return false;
	  case 13:document.images["grille2"].src="images-grille/move/move_grille03big.jpg";return false;
	  case 14:document.images["grille2"].src="images-grille/move/move_grille04big.jpg";return false;
	  case 15:document.images["grille2"].src="images-grille/move/move_grille05big.jpg";return false;
	  case 16:document.images["grille3"].src="images-grille/tanto/tanto_grille01big.jpg";return false;
	  case 17:document.images["grille3"].src="images-grille/tanto/tanto_grille02big.jpg";return false;
	  case 18:document.images["grille3"].src="images-grille/tanto/tanto_grille03big.jpg";return false;
	  case 19:document.images["grille3"].src="images-grille/tanto/tanto_grille04big.jpg";return false;
	  case 20:document.images["grille3"].src="images-grille/tanto/tanto_grille05big.jpg";return false;
	  case 21:document.images["grille4"].src="images-grille/stream/stream_grille01big.jpg";return false;
	  case 22:document.images["grille4"].src="images-grille/stream/stream_grille02big.jpg";return false;
	  case 23:document.images["grille4"].src="images-grille/stream/stream_grille03big.jpg";return false;
	  case 24:document.images["grille4"].src="images-grille/stream/stream_grille04big.jpg";return false;
	  case 25:document.images["grille4"].src="images-grille/stream/stream_grille05big.jpg";return false;
	  case 26:document.images["grille5"].src="images-grille/velfire/velfire_grille01big.jpg";return false;
	  case 27:document.images["grille5"].src="images-grille/velfire/velfire_grille02big.jpg";return false;
	  case 28:document.images["grille5"].src="images-grille/velfire/velfire_grille03big.jpg";return false;
	  case 29:document.images["grille5"].src="images-grille/velfire/velfire_grille04big.jpg";return false;
	  case 30:document.images["grille5"].src="images-grille/velfire/velfire_grille05big.jpg";return false;
	  default:break;
	}
}