function mainadvert() { //3 var ranNum= Math.round(Math.random() * 3); if (ranNum == 0){document.write('

'); } // lovefilm if (ranNum == 1){document.write('

'); } // hoseasons if (ranNum == 2){document.write('

'); } // newlook if (ranNum == 3){document.write('

'); } // bhs }