function rnm(n,m){

return parseInt(n+Math.random()*(m-n));

};

window.onload=function(){

var oP = document.getElementsByTagName('p')[0];

var oDiv = document.getElementsByTagName('div')[0];

function suiji(){

var len = rnm(1,20);

for (var i = 0; i < len; i++) {

var oS = document.createElement('span');

oS.innerHTML = rnm(0,11);

oDiv.appendChild(oS);

oS.style.fontSize = rnm(20,40)+"px";

oS.style.left = rnm(0,480)+'px';

oS.style.color = 'rgb('+rnm(0,255)+','+rnm(0,255)+','+rnm(0,255)+')';

(function(oS){

move(oS,{top:510},{time:rnm(1000,5000),type:"ease-in",fn:function(){

oDiv.removeChild(oS);

}});

})(oS);

};

};

oP.onclick=function(){

oP.style.display="none";

setInterval(suiji, rnm(500,1500));

};

};