var imgM = new Array();

imgM[0] = new Image();  imgM[0].src = "../img_common/navi1.gif";
imgM[1] = new Image();  imgM[1].src = "../img_common/navi1r.gif";
imgM[2] = new Image();  imgM[2].src = "../img_common/navi2.gif";
imgM[3] = new Image();  imgM[3].src = "../img_common/navi2r.gif";
imgM[4] = new Image();  imgM[4].src = "../img_common/navi3.gif";
imgM[5] = new Image();  imgM[5].src = "../img_common/navi3r.gif";
imgM[6] = new Image();  imgM[6].src = "../img_common/navi4.gif";
imgM[7] = new Image();  imgM[7].src = "../img_common/navi4r.gif";
imgM[8] = new Image();  imgM[8].src = "../img_common/navi5.gif";
imgM[9] = new Image();  imgM[9].src = "../img_common/navi5r.gif";
imgM[10] = new Image();  imgM[10].src = "../img_common/navi6.gif";
imgM[11] = new Image();  imgM[11].src = "../img_common/navi6r.gif";

function Min(nam,num) {
        document.images[nam].src = imgM[num].src;
}