/**提示 */
function tooltip(file,type){
    //页面层
    title = '提示信息';
    switch (type) {
        case 1:
            title="圖形提示";
            break;
        case 2:
            title="文字提示";
            break;
        default:
            title="文字提示";
            break;
    }
    var filename = "image/"+file;
    var img = new Image();
    img.src = filename;
    img.onload = function() {
        var html = "<div><img src='"+filename+"'/> </div>";
        layer.open({
            type: 1, 
            content: html,
            area: [img.width+20+'px', img.height+60+'px'],
            title:title,
        });	
    };
}