演示：http://keynes.cn
<SCRIPT language="JavaScript"><!-- today=new Date(); jran=today.getTime(); function rnd() {     ia=9301;     ic=49297;     im=233280;     jran = (jran*ia+ic) % im;     return jran/(im*1.0); }; function rand(number) {     return Math.ceil(rnd()*number); }; document.write("<CENTER>"); for(i=1;i<=1;i++) { myNum=(rand(3)); //please adjust the number here, the number "3" mean three pieces. if(myNum == 1) document.write("<img src=\'images/ok/1.gif\'>"); if(myNum == 2) document.write("<img src=\'images/ok/2.gif\'>"); if(myNum == 3) document.write("<img src=\'images/ok/3.gif\'>"); if(myNum == 4) document.write("<img src=\'images/ok/4.gif\'>"); if(myNum == 5) document.write("<img src=\'images/ok/5.gif\'>"); if(myNum == 6) document.write("<img src=\'images/ok/6.gif\'>"); if(myNum == 7) document.write("<img src=\'images/ok/7.gif\'>"); if(myNum == 8) document.write("<img src=\'images/ok/8.gif\'>"); if(myNum == 9) document.write("<img src=\'images/ok/9.gif\'>"); if(myNum == 10) document.write("<img src=\'images/ok/10.gif\'>"); if(myNum == 11) document.write("<img src=\'images/ok/11.gif\'>"); if(myNum == 12) document.write("<img src=\'images/ok/12.gif\'>"); if(myNum == 13) document.write("<img src=\'images/ok/13.gif\'>"); if(myNum == 14) document.write("<img src=\'images/ok/14.gif\'>"); if(myNum == 15) document.write("<img src=\'images/ok/15.gif\'>"); if(myNum == 16) document.write("<img src=\'images/ok/16.gif\'>"); if(myNum == 17) document.write("<img src=\'images/ok/17.gif\'>"); if(myNum == 18) document.write("<img src=\'images/ok/18.gif\'>"); if(myNum == 19) document.write("<img src=\'images/ok/19.gif\'>"); if(myNum == 20) document.write("<img src=\'images/ok/20.gif\'>"); if(myNum == 21) document.write("<img src=\'images/ok/21.gif\'>"); if(myNum == 22) document.write("<img src=\'images/ok/22.gif\'>"); if(myNum == 23) document.write("<img src=\'images/ok/23.gif\'>"); if(myNum == 24) document.write("<img src=\'images/ok/24.gif\'>"); if(myNum == 25) document.write("<img src=\'images/ok/25.gif\'>"); if(myNum == 26) document.write("<img src=\'images/ok/26.gif\'>"); if(myNum == 27) document.write("<img src=\'images/ok/27.gif\'>"); if(myNum == 28) document.write("<img src=\'images/ok/28.gif\'>"); if(myNum == 29) document.write("<img src=\'images/ok/29.gif\'>"); if(myNum == 30) document.write("<img src=\'images/ok/30.gif\'>"); if(myNum == 31) document.write("<img src=\'images/ok/31.gif\'>"); if(myNum == 32) document.write("<img src=\'images/ok/32.gif\'>"); if(myNum == 33) document.write("<img src=\'images/ok/33.gif\'>"); //Add or Remove above sentences up to the pieces of BANNER. Something behind “src” is the  save location of BANNER.     else { document.write(); } }; document.write("</CENTER>"); //--> </SCRIPT>
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