function preloadimages() {
    image01 = new Image();
    image01.src = "eriimg/home1_ov.gif";
    image02 = new Image();
    image02.src = "eriimg/info2_ov.gif";
    image03 = new Image();
    image03.src = "eriimg/fishing3_ov.gif";
    image04 = new Image();
    image04.src = "eriimg/diary4_ov.gif";
    image05 = new Image();
    image05.src = "eriimg/bigone5_ov.gif";
    image06 = new Image();
    image06.src = "eriimg/access6_ov.gif";
    image07 = new Image();
    image07.src = "eriimg/links7_ov.gif";
}