if (document.images) {
      	names = new Array(  "menu_imgs" );
      	menuimgs = new Array(25);
      	menuimgs[1] = new String("en-tete_1_clavier-NB.jpg");
      	menuimgs[2] = new String("en-tete_1_clavier-C.jpg");
      	menuimgs[3] = new String("en-tete_2_clavier-NB_cables-NB.jpg");
      	menuimgs[4] = new String("en-tete_2_clavier-C_cables-NB.jpg");
      	menuimgs[5] = new String("en-tete_2_clavier-NB_cables-C.jpg");
      	menuimgs[6] = new String("en-tete_3_cables-NB.jpg");
      	menuimgs[7] = new String("en-tete_3_cables-C.jpg");
      	menuimgs[8] = new String("en-tete_4_cables-NB_HP-NB.jpg");
      	menuimgs[9] = new String("en-tete_4_cables-C_HP-NB.jpg");
      	menuimgs[10] = new String("en-tete_4_cables-NB_HP-C.jpg");
      	menuimgs[11] = new String("en-tete_5_HP-NB.jpg");
      	menuimgs[12] = new String("en-tete_5_HP-C.jpg");
      	menuimgs[13] = new String("en-tete_6_HP-NB_part-NB.jpg");
      	menuimgs[14] = new String("en-tete_6_HP-C_part-NB.jpg");
      	menuimgs[15] = new String("en-tete_6_HP-NB_part-C.jpg");
      	menuimgs[16] = new String("en-tete_7_HP-NB_part-NB_piano-NB.jpg");
      	menuimgs[17] = new String("en-tete_7_HP-C_part-NB_piano-NB.jpg");
      	menuimgs[18] = new String("en-tete_7_HP-NB_part-C_piano-NB.jpg");
      	menuimgs[19] = new String("en-tete_7_HP-NB_part-NB_piano-C.jpg");
      	menuimgs[20] = new String("en-tete_8_part-NB_piano-NB.jpg");
      	menuimgs[21] = new String("en-tete_8_part-C_piano-NB.jpg");
      	menuimgs[22] = new String("en-tete_8_part-NB_piano-C.jpg");
      	menuimgs[23] = new String("en-tete_9_piano-NB.jpg");
      	menuimgs[24] = new String("en-tete_9_piano-C.jpg");
      }
      
      function preload_images() {
        img1 = new Image();
      	img1.src = menuimgs[1];
        img2 = new Image();
      	img2.src = menuimgs[2];
        img3 = new Image();
      	img3.src = menuimgs[3];
        img4 = new Image();
      	img4.src = menuimgs[4];
        img5 = new Image();
      	img5.src = menuimgs[5];
        img6 = new Image();
      	img6.src = menuimgs[6];
        img7 = new Image();
      	img7.src = menuimgs[7];
        img8 = new Image();
      	img8.src = menuimgs[8];
        img9 = new Image();
      	img9.src = menuimgs[9];
        img10 = new Image();
      	img10.src = menuimgs[10];
        img11 = new Image();
      	img11.src = menuimgs[11];
        img12 = new Image();
      	img12.src = menuimgs[12];
        img13 = new Image();
      	img13.src = menuimgs[13];
        img14 = new Image();
      	img14.src = menuimgs[14];
        img15 = new Image();
      	img15.src = menuimgs[15];
        img16 = new Image();
      	img16.src = menuimgs[16];
        img17 = new Image();
      	img17.src = menuimgs[17];
        img18 = new Image();
      	img18.src = menuimgs[18];
        img19 = new Image();
      	img19.src = menuimgs[19];
        img20 = new Image();
      	img20.src = menuimgs[20];
        img21 = new Image();
      	img21.src = menuimgs[21];
        img22 = new Image();
      	img22.src = menuimgs[22];
        img23 = new Image();
      	img23.src = menuimgs[23];
        img24 = new Image();
      	img24.src = menuimgs[24];
        img25 = new Image();
      	img25.src = menuimgs[25];
      }
      
      function mouseover(menu_nb) {
      	if (document.images) {
      		if (menu_nb == 1) {
      			document.images["menu1"].src = menuimgs[2];
      			document.images["menu10"].src = menuimgs[4];
      		}
      		else if (menu_nb == 2) {
      			document.images["menu10"].src = menuimgs[5];
      			document.images["menu2"].src = menuimgs[7];
      			document.images["menu20"].src = menuimgs[9];
      		}
      		else if (menu_nb == 3) {
      			document.images["menu20"].src = menuimgs[10];
      			document.images["menu3"].src = menuimgs[12];
      			document.images["menu30"].src = menuimgs[14];
      			document.images["menu4"].src = menuimgs[17];
      		}
      		else if (menu_nb == 4) {
      			document.images["menu30"].src = menuimgs[15];
      			document.images["menu4"].src = menuimgs[18];
      			document.images["menu40"].src = menuimgs[21];
      		}
      		else if (menu_nb == 5) {
      			document.images["menu4"].src = menuimgs[19];
      			document.images["menu40"].src = menuimgs[22];
      			document.images["menu5"].src = menuimgs[24];
      		}
      	}
      }
      
      function mouseout(menu_nb) {
      	if (document.images) {
      		if (menu_nb == 1) {
      			document.images["menu1"].src = menuimgs[1];
      			document.images["menu10"].src = menuimgs[3];
      		}
      		else if (menu_nb == 2) {
      			document.images["menu10"].src = menuimgs[3];
      			document.images["menu2"].src = menuimgs[6];
      			document.images["menu20"].src = menuimgs[8];      			
      		}
      		else if (menu_nb == 3) {
      			document.images["menu20"].src = menuimgs[8];
      			document.images["menu3"].src = menuimgs[11];
      			document.images["menu30"].src = menuimgs[13];  
      			document.images["menu4"].src = menuimgs[16];    			
      		}
      		else if (menu_nb == 4) {
      			document.images["menu30"].src = menuimgs[13];
      			document.images["menu4"].src = menuimgs[16];
      			document.images["menu40"].src = menuimgs[20];
      		}
      		else if (menu_nb == 5) {
      			document.images["menu4"].src = menuimgs[16];
      			document.images["menu40"].src = menuimgs[20];
      			document.images["menu5"].src = menuimgs[23];
      		}
      	}	
      }