window.onload = function formitem() {

    //フォーカスでテキスト消去
    var searchbox = document.getElementById("s");
    searchbox.onfocus = function() {
        if (this.value == '検索') {
            this.value = '';
        }
    }
    //空欄なら復活
    searchbox.onblur = function(){
        if (this.value == '') {
            this.value = '検索';
        }
    }
    
    //フォーカスでテキスト消去
    var textarea = document.getElementById("commentarea");
    textarea.onfocus = function() {
        if(this.value == 'Contribute your comment\.') {
            this.value = '';
        }
    }
    //空欄なら復活
    textarea.onblur = function() {
        if(this.value == '') {
            this.value = 'Contribute your comment\.';
        }
    }
    
    //フォーカスで選択
    var inputping = document.getElementById("trackbackuri");
    inputping.onfocus = function() {
        var a = this;
        setTimeout(function() {
            a.select();
        }, 0);
    }
}