var adad=0;
var faal=0;
var timesm;
var akhar;
var ntool;

function boro(){

if (faal == 0)
{
faal=1;
timesm=setInterval ("bala()",50);

}


}
function vaysa(){
faal=0;
clearInterval(timesm);
}
function bala(){
ntool=document.getElementById("moalemfaal").offsetHeight *-1;
if(adad < ntool){
adad=400;
}
else
{
adad=adad-2;
}

document.getElementById("moalemfaal").style.top=adad + "px";

}