<script language="JavaScript">

function GeneratePassword() {

if (parseInt(navigator.appVersion) <= 3) {
alert("Sorry this only works in 4.0+ browsers");
return true;
}

var length=8;
var sPassword = "";
length = document.aForm.charLen.options[document.aForm.charLen.selectedIndex].value;

var noPunction = (document.aForm.punc.checked);
var randomLength = (document.aForm.rLen.checked);

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.aForm.passField.value = sPassword

return true;
}

function getRandomNum() {

// between 0 - 1
var rndNum = Math.random()

// rndNum from 0 - 1000
rndNum = parseInt(rndNum * 1000);

// rndNum from 33 - 127
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;
}

</script>

<h2>JavaScript : Password Generator</h2>

<p>
<form name="aForm">
<table><tr><td>
Generated Password:<br>
<input type="text" name="passField" value="" size="15"><br>
</td>
<td>
# of chars<br>
<select name="charLen">
<option value="4">4
<option value="5">5
<option value="6">6
<option value="7">7
<option value="8" selected>8
<option value="9">9
<option value="10">10
<option value="11">11
<option value="12">12
<option value="13">13
<option value="14">14
<option value="15">15
</select>
</td></tr>
<tr><td>
<p>
<input type="checkbox" name="punc" checked> No Punction Marks <br>
<input type="checkbox" name="rLen"> Random Length (6 - 12) <br>
</p>
</td>
<td>&nbsp;
</td>
</tr>
<tr><td colspan="2" align=center>&nbsp;</td></tr>
<tr><td colspan="2" align=center>

<p><input type="button" value=" Generate Password " onClick="GeneratePassword()"></p>

</td></tr></table>