checkjQuery.js

// Check that jQuery is 
// loaded with an upper limit 
// for the number of calls.

function checkjQuery(upper) {
  if (typeof jQuery != 'undefined') {
    jQuery(document).ready(function () { 
            // jQuery dependant function
          });
  } else {
    if (upper <= 100) {
      var checkjQueryTimeout = setTimeout(checkjQuery(upper + 1), 200);
    }
  }
}

setTimeout(function() { checkjQuery(1) }, 100);