// init
document.observe('dom:loaded', function(){
    
   // handle search focus
   if( $('search-query') ){
    
        $('search-query').observe('focus', searchFocusHandler);
        $('search-query').observe('blur', searchBlurHandler);
   }
});

function searchFocusHandler(){
    
    if( $('search-query').value == 'Search our products...' )
        $('search-query').value = '';
}

function searchBlurHandler(){
    
    if( $('search-query').value == '' )
        $('search-query').value = 'Search our products...';
}