isamap = new Object();
isamap[0] = "_df";
isamap[1] = "_ov";

function isimgact(id, act){
        if(document.images) document.images[id].src = eval( "isimages." + id + isamap[act] + ".src");
}

if (document.images) {
isimages = new Object();

isimages.menu1_df = new Image();
isimages.menu1_df.src = "../../images/menu_1.gif";

isimages.menu1_ov = new Image();
isimages.menu1_ov.src = "../../images/menu_1_ov.gif";

isimages.menu2_df = new Image();
isimages.menu2_df.src = "../../images/menu_2.gif";

isimages.menu2_ov = new Image();
isimages.menu2_ov.src = "../../images/menu_2_ov.gif";

isimages.menu3_df = new Image();
isimages.menu3_df.src = "../../images/menu_3.gif";

isimages.menu3_ov = new Image();
isimages.menu3_ov.src = "../../images/menu_3_ov.gif";

isimages.menu4_df = new Image();
isimages.menu4_df.src = "../../images/menu_4.gif";

isimages.menu4_ov = new Image();
isimages.menu4_ov.src = "../../images/menu_4_ov.gif";

isimages.menu5_df = new Image();
isimages.menu5_df.src = "../../images/menu_5.gif";

isimages.menu5_ov = new Image();
isimages.menu5_ov.src = "../../images/menu_5_ov.gif";

isimages.menu6_df = new Image();
isimages.menu6_df.src = "../../images/menu_6.gif";

isimages.menu6_ov = new Image();
isimages.menu6_ov.src = "../../images/menu_6_ov.gif";
}