var fade = 0;
var interval = 300;
var obj;

function fade_in(){
if(fade <= 100){
obj = document.getElementById("copy");
obj.style.filter = "alpha(opacity=" + (fade * 5) + ")";
obj.style.MozOpacity = fade / 50 ;
obj.style.opacity = fade / 50 ;
fade++;
setTimeout('fade_in()',interval);
}
}