commonPrompt=function(message){

        //创建prompt框样式

        var type="width:60%;padding:5px;line-height:20px; border-radius:15px;background-color:#6c6c6c; color:#fff; text-align:center;font-size:.8em; top:65%;opacity:0;position:fixed;left:20%;z-index:1003;";

        //创建prompt框

        var h=$("<div style='"+type+"' id='e_ui_prompt'>"+message+"</div>");

        $('body').append(h);

        //改变透明度

        var i=0;

        var t=setInterval(function(){

            i=i+0.1;

            if(i>=1){

                clearInterval(t);

                i=0;

            }else{

                $(h).css('opacity',i);

            }

        },80);

        //2秒后消失

        setTimeout(function(){

            var j=$(h).css('opacity');

            var ti=setInterval(function(){

                j=j-0.1;

                if(j<=0){

                    clearInterval(ti);

                    $(h).remove();

                }else{

                    $(h).css('opacity',j);

                }

            },80);

        },2000);

    };