function randomChar(l) {

 var x="023456789";

 var tmp="";

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

 tmp += x.charAt(Math.ceil(Math.random()*100000000)%x.length);

 }

 return tmp.substring(1,5);

 }


var curcode;
curcode=randomChar(100);
document.getElementById("v3").value=curcode;
document.getElementById("setcode").innerHTML=curcode;