var PicArray, PicArrayB, Name;
        var LoadReady = false;
        function preLoad() {
                if( JSVersion == 1.1 ) {
                        PicArray= new Array();
                        PicArrayB = new Array();
                        
                        for( var c=1; c<=10; c++ ) {
                                PicArray[1] = new Image();
                                PicArrayB[1] = new Image();
                                PicArray[1].src = "pics/e_esihistoria1.gif";
                                PicArrayB[1].src = "pics/e_esihistoria2.gif";
                                PicArray[2] = new Image();
                                PicArrayB[2] = new Image();
                                PicArray[2].src = "pics/e_keskiaika1.gif";
                                PicArrayB[2].src = "pics/e_keskiaika2.gif";
                                PicArray[3] = new Image();
                                PicArrayB[3] = new Image();
                                PicArray[3].src = "pics/e_uskonpuhdistuksen_aika1.gif";
                                PicArrayB[3].src = "pics/e_uskonpuhdistuksen_aika2.gif";
                                PicArray[4] = new Image();
                                PicArrayB[4] = new Image();
                                PicArray[4].src = "pics/e_suurvallan_osana1.gif";
                                PicArrayB[4].src = "pics/e_suurvallan_osana2.gif";
                                PicArray[5] = new Image();
                                PicArrayB[5] = new Image();
                                PicArray[5].src = "pics/e_vapauden_aika1.gif";
                                PicArrayB[5].src = "pics/e_vapauden_aika2.gif";
                                PicArray[6] = new Image();
                                PicArrayB[6] = new Image();
                                PicArray[6].src = "pics/e_kustavilainen_aika1.gif";
                                PicArrayB[6].src = "pics/e_kustavilainen_aika2.gif";
                                PicArray[7] = new Image();
                                PicArrayB[7] = new Image();
                                PicArray[7].src = "pics/e_etusivu1.gif";
                                PicArrayB[7].src = "pics/e_etusivu2.gif";
                                PicArray[8] = new Image();
                                PicArrayB[8] = new Image();
                                PicArray[8].src = "pics/e_info1.gif";
                                PicArrayB[8].src = "pics/e_info2.gif";
                                PicArray[9] = new Image();
                                PicArrayB[9] = new Image();
                                PicArray[9].src = "pics/e_sivukartta1.gif";
                                PicArrayB[9].src = "pics/e_sivukartta2.gif";
                                PicArray[10] = new Image();
                                PicArrayB[10] = new Image();
                                PicArray[10].src = "pics/e_lahteet1.gif";
                                PicArrayB[10].src = "pics/e_lahteet2.gif";
                                PicArray[11] = new Image();
                                PicArrayB[11] = new Image();
                                PicArray[11].src = "pics/e_linkkeja1.gif";
                                PicArrayB[11].src = "pics/e_linkkeja2.gif";
                        }
                }
                LoadReady = true;

	}

        function on( Name, Number ) {

                if(( JSVersion == 1.1 ) && ( LoadReady == true )){
                        document.images[Name].src = PicArrayB[Number].src;
                }
       }
       	function off( Name, Number ) {
               if(( JSVersion == 1.1 ) && ( LoadReady == true )){
                       document.images[Name].src = PicArray[Number].src;
               }
        }

     	preLoad();