function getRandomNum(lbound, ubound) {
	return (Math.floor(Math.random() * (ubound - lbound)) + lbound);
}
function getRandomChar(number, lower, upper, other, extra) {
	var numberChars = "0123456789";
	var lowerChars = "abcdefghijklmnopqrstuvwxyz";
	var upperChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
	var otherChars = "`~!@#$%^*()-_=+[{]}\\|;:'\",<.>/? ";
	var charSet = extra;

	if (number == true)
	charSet += numberChars;

	if (lower == true)
	charSet += lowerChars;

	if (upper == true)
	charSet += upperChars;

	if (other == true)
	charSet += otherChars;

	return charSet.charAt(getRandomNum(0, charSet.length));
}
function getPassword(length, extraChars, firstNumber, firstLower, firstUpper, firstOther,latterNumber, latterLower, latterUpper, latterOther) {
	var rc = "";
	if (length > 0)
		rc = rc + getRandomChar(firstNumber, firstLower, firstUpper, firstOther, extraChars);
	for (var idx = 1; idx < length; ++idx) {
		rc = rc + getRandomChar(latterNumber, latterLower, latterUpper, latterOther, extraChars);
	}
	return rc;
}

function randomtext() {
   var tmp= getPassword (8, 'softpackvn', true, true, true, false,true, true,true,false);
   return tmp;
}
function channelkey() {
   var tmp= getPassword (8, 'softpackvn', true, true, true, false,true, true,true,false);
   return tmp;
}