function randomName(len)

{

len=len||23;

var  chars='ABCDEFGHJKMNPQRSTWXYZabcdefhijkmnprstwxyz2345678';

var charsLength=chars.length;

var str='';

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

str+=chars.charAt(Math.floor(Math.random()*charsLength))

}

return new Date().getTime()+str

}

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