//fadeOut

    //function start

    function fadeOut(ele,speed){

        var ele=document.getElementById(ele);

        var opacitynum=ele.style.opacity||1;

        var speed=(speed/100)||10;

        function opacityOff(){

            if(opacitynum>0){

                ele.style.opacity=opacitynum=(opacitynum-0.01).toFixed(2);

            }else{

                clearInterval(opacityt);

            }

        }

        var opacityt=setInterval(opacityOff,speed);

    }

    //function end

    //fadeIn

    //function start

    function fadeIn(ele,speed){

        var ele=document.getElementById(ele);

        var opacitynum=ele.style.opacity||0;

        var speed=(speed/100)||10;

        function opacityAdd(){

            if(opacitynum<1){

                ele.style.opacity=opacitynum=(parseFloat(opacitynum)+0.01).toFixed(2);

            }else{

                clearInterval(opacityt);

            }

        }

        var opacityt=setInterval(opacityAdd,speed);

    }

    //function end