Making javascript external
<p>I have too much of javascript in the beta site of mine which will be the real one, So what I am thinking is to make the javascript external BUT this raises some really important questions.</p>

<ol>
<li>What is the standard size for an external javascript (e-g should be
never more than 50KB per file).</li>
<li>How many javascript files should be make if the above question is
answered like that the size doesn't matter, then does it mean I
should put all scripts (including Jquery library) in one external
file?</li>
<li>If a javascript is already minified and it is added with other files
that are not minified will it effect the one that is already
minified?</li>
<li>What is the best minifier for Javascript and CSS (best means that
maintains the standards).</li>
<li>If I place the external script just after <code>&lt;body&gt;</code> is it good
enough?(as if I go more lower some scripts might stop working).</li>
</ol>

<p>Here is the link to beta site just incase if you want to check <a href="http://bloghutsbeta.blogspot.com/" rel="nofollow">http://bloghutsbeta.blogspot.com/</a></p>
