Javascript ile şifre üretme

function GeneratePassword() {
 
    var length=6;
    var sPassword = "";
 
    var noPunction = 1;
    var randomLength = 2;
 
    if (randomLength) {
        length = Math.random();
 
        length = parseInt(length * 100);
        length = (length % 7) + 6
    }

    for (i=0; i < length; i++) {
         numI = getRandomNum();
        if (noPunction) { while (checkPunc(numI)) { numI = getRandomNum(); } }
         sPassword = sPassword + String.fromCharCode(numI);
    }
 
    document.WebSiteAdd.password.value = sPassword;
}
 
function getRandomNum() {
 var rndNum = Math.random()
 rndNum = parseInt(rndNum * 1000);
 rndNum = (rndNum % 94) + 33;
 return rndNum;
}
 
function checkPunc(num) {
    if ((num >=33) && (num <=47)) { return true; }
    if ((num >=58) && (num <=64)) { return true; }
    if ((num >=91) && (num <=96)) { return true; }
    if ((num >=123) && (num <=126)) { return true; }
 
    return false;
}