some modifications to original script...

gistfile1.js

// JQuery /w fallback + main.js
function loadJquery(scripts,idx) {   
   function fallback() {   
      clearTimeout(timeout);   
      if (typeof jQuery === 'undefined') {
      	if (idx < scripts.length-1) loadJquery(scripts,idx+1); 
      } else {
      	//load scripts that depend on jquery or just return
      	$LAB.script("javascripts/main.js");
      }
   }   
  
   if (idx == null) idx = 0;   
   $LAB.script(scripts[idx].src).wait(fallback);   
   var timeout = setTimeout(fallback,500); 
}
 
loadJquery([   
   {src:"//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"},   
   {src:"/javascripts/libs/jquery.min.js"}   
]);