var img = new Array;

img[0] = "img/main12.jpg";
img[1] = "img/main07.jpg";
img[2] = "img/main08.jpg";
img[3] = "img/main09.jpg";
img[4] = "img/main10.jpg";
img[5] = "img/main11.jpg";
function random_img(){
        var i = myrandom(img.length) - 1;
        document.write("<IMG SRC=\""+img[i]+"\">");
}
function myrandom(max){
        var v = max * Math.random();
        if(v == 0.0){v = 1;}else{v = Math.ceil(v);}
        return v;
}