javascript validate problems

i have the following on my site

[code]
<script type=”text/javascript”>

function validate(f) {
if (f.ipbin1.value == 10101100) {
alert (“Well Done, try the next one”);

} else {
alert (“Incorrect, Have another go!”);
}
return false;
}

function validate(f) {
if (f.ipbin2.value == 00111000) {
alert (“Well Done, try the next one”);

} else {
alert (“Incorrect, Have another go!”);
}
return false;
}
function validate(f) {
if (f.ipbin3.value == 11100000) {
alert (“Well Done”);

} else {
alert (“Incorrect, Have another go!”);
}
return false;
}

</script>
[/code]

and then the forms:

[code]<form name =”ipbin1″ onSubmit=”return validate(this)”>
<input type=”text” name=”ipbin1″ size=”8″>
<input type=”submit” value=”Submit” name=”B1″>
</form></td>
</tr>
<tr>
<td width=”249″ bgcolor=”#003366″ align=”left”>
<p align=”left”>Convert 56 into Binary</td>
<td width=”188″>
<p align=”center”>&gt;&gt;</td>
<td><form name =”ipbin2″ onSubmit=”return validate(this)”>
<input type=”text” name=”ipbin2″ size=”8″>
<input type=”submit” value=”Submit” name=”B2″></form></td>
</tr>
<tr>
<td width=”249″ bgcolor=”#003366″ align=”left”>
<p align=”left”>Convert 224 into Binary</td>
<td width=”188″>
<p align=”center”>&gt;&gt;</td>
<td><form name =”ipbin3″ onSubmit=”return validate(this)”>
<input type=”text” name=”ipbin3″ size=”8″>
<input type=”submit” value=”Submit” name=”B3″></form></td>[/code]

Why does the third form validate fine but the first 2 dont?

cheers for any help

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