Function importLoad

core/cb.addons/require-tools/css/css.js:68–90

(url, callback)

    head.appendChild(curStyle);
  }
  var importLoad = function(url, callback) {
    createStyle();

    var curSheet = curStyle.styleSheet || curStyle.sheet;

    if (curSheet && curSheet.addImport) {
      // old IE
      curSheet.addImport(url);
      curStyle.onload = callback;
    }
    else {
      // old Firefox
      curStyle.textContent = '@import "' + url + '";';

      var loadInterval = setInterval(function() {
        try {
          curStyle.sheet.cssRules;
          clearInterval(loadInterval);
          callback();
        } catch(e) {}
      }, 10);
    }
  }

  // <link> load method
  var linkLoad = function(url, callback) {