function addFav() {   //加入收藏夹  
    if (document.all) {
        window.external.addFavorite('http://www.shanyoo.com', '尚游网');
    }
    else if (window.sidebar) {
        window.sidebar.addPanel('尚游网', 'http://www.shanyoo.com', "http://www.shanyoo.com");
    }
}

function OnEnter( field ) { if( field.value == field.defaultValue ) { field.value = ""; } }
function OnExit( field ) { if( field.value == "" ) { field.value = field.defaultValue; } }