function getRandomNumber(min,max){
var min = Math.floor(min);
var max = Math.floor(max);
return Math.floor(Math.random()*(max-min));
}
function getRandomString(number){
var char = ['0','1','2','3','4','5','6','7','8','9','A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','R','S','T','U','V','W','X','Y','Z'];
for (var i = 0; i < number; i++){
var str='';
str+=char[Math.floor(Math.random()*35)];
return str;
};
}