function change() { number = Math.floor(Math.random()*20) if (number==0) document.write ('

') if (number==1) document.write ('

') if (number==2) document.write ('

') if (number==3) document.write ('

') if (number==4) document.write ('

') if (number==5) document.write ('

') if (number==6) document.write ('

') if (number==7) document.write ('

') if (number==8) document.write ('

') if (number==9) document.write ('

') if (number==10) document.write ('

') if (number==11) document.write ('

') if (number==12) document.write ('

') if (number==13) document.write ('

') if (number==14) document.write ('

') if (number==15) document.write ('

') if (number==16) document.write ('

') if (number==17) document.write ('

') if (number==18) document.write ('

') if (number==19) document.write ('

') }