to change the search words in drupal search form

hermio.js

/*replace      Drupal.hermio.setInputPlaceHolder('search_block_form', 'Keywords', '#search-block-form'); */

/*with */
Drupal.hermio.setInputPlaceHolder('search_block_form', 'Search', '#search-block-form');

template.php

/**
* marisa's hook_form_FORM_ID_alter
*CHANGE THE NAME OF THE THEME IN THE FUNCTION
*/
function jvn6_form_search_block_form_alter(&$form, &$form_state, $form_id) {
    // Add extra attributes to the text box
    $form['search_block_form']['#attributes']['onblur'] = "if (this.value == '') {this.value = 'Search';}";
    $form['search_block_form']['#attributes']['onfocus'] = "if (this.value == 'Search') {this.value = '';}";
    // Prevent user from searching the default text
    $form['#attributes']['onsubmit'] = "if(this.search_block_form.value=='Search'){ alert('Please enter a search phrase.'); return false; }";

    // Alternative (HTML5) placeholder attribute instead of using the javascript
    $form['search_block_form']['#attributes']['placeholder'] = t('Search');
}