How to change the size of my Search Box

[maatfangoo]

How to change the size of my search box to make it larger

[magento_wire]

Click on the ADVANCED tab under TOOLS::INTERNET OPTIONS and then uncheck "Use Visual Styles..."  This will fix your problem!

[DavidStephan]

I think this will be help for you

var searchForm = new Varien.searchForm('search_mini_form', 'search', '<?php echo $this->__('Search entire store here...') ?>');
            searchForm.initAutocomplete('<?php echo $this->helper('catalogsearch')->getSuggestUrl() ?>', 'search_autocomplete');
        //]]>