function array_diff_assoc (arr1) {
  // http://kevin.vanzonneveld.net
  // +   original by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
  // +   bugfixed by: 0m3r
  // +    revised by: Brett Zamir (http://brett-zamir.me)
  // *     example 1: array_diff_assoc({0: 'Kevin', 1: 'van', 2: 'Zonneveld'}, {0: 'Kevin', 4: 'van', 5: 'Zonneveld'});
  // *     returns 1: {1: 'van', 2: 'Zonneveld'}
  var retArr = {},
    argl = arguments.length,
    k1 = '',
    i = 1,
    k = '',
    arr = {};

  arr1keys: for (k1 in arr1) {
    for (i = 1; i < argl; i++) {
      arr = arguments[i];
      for (k in arr) {
        if (arr[k] === arr1[k1] && k === k1) {
          // If it reaches here, it was found in at least one array, so try next value
          continue arr1keys;
        }
      }
      retArr[k1] = arr1[k1];
    }
  }

  return retArr;
}

array_diff_assoc({0: 'Kevin', 1: 'van', 2: 'Zonneveld'}, {0: 'Kevin', 4: 'van', 5: 'Zonneveld'});

{1: 'van', 2: 'Zonneveld'}