function keysearch(api){
    if(document.search.searchword.value.length == 0){
        alert('何か言葉を入れてください');
    }else{
		window.location.href = 'http://plantronicsdepot.com/hannya/' + api + '/list/'+ encodeURI(document.search.searchword.value) + '.html';
	}
}