General - CSS JS Order Optimization

script.js

var i, total=0;
for (i=1;i<=3000;i++){
    total += Math.sqrt(2 * Math.pow(i, 2));;
    document.write("Total: " + total);
    document.write("<br>");
}

CSS then JS

JS then CSS

CSS, JS, CSS then JS

JS, CSS, JS then CSS

*In Most Cases, CSS First, JS Second

More Info: 

https://developers.google.com/speed/docs/best-practices/rtt#PutStylesBeforeScripts

http://developer.yahoo.com/performance/rules.html#js_bottom