var ie=document.all?true:false;
var obj=0;
var fDiv=null;

var To=10;
var Cto=null;
function divAlphaup(s,e,o){
    var i=ie?o.filters.alpha.opacity:o.style.MozOpacity*100;
    if ((s>0&&i<e)||(s<0&&i>e)){
        ie?o.filters.alpha.opacity=i+s:o.style.MozOpacity=(i+s)/100;
        var cmd=function(){divAlphaup(s,e,o);}
        Cto=setTimeout(cmd,To);
    }
}
function divAlphadown(s,e,o){
    var i=ie?o.filters.alpha.opacity:o.style.MozOpacity*100;
    if ((s>0&&i>e)||(s<0&&i>e)){
        ie?o.filters.alpha.opacity=i-s:o.style.MozOpacity=(i-s)/100;
        var cmd=function(){divAlphadown(s,e,o);}
        Cto=setTimeout(cmd,To);
    }
}
function change_opacity(obj,updown){
 obj = document.getElementById(obj);
 if(updown == "up"){
 divAlphaup(5,100,obj)
 }else if(updown == "down"){
 divAlphadown(5,0,obj)
 }
}