var obj;
function OPN (id) { 
 //if(obj){obj.style.visibility = "hidden";}
    if(!document.getElementById) return;
            obj = document.getElementById(id);
        obj.style.visibility = "visible";   
fadeOut('top1');
}
function fadeOut(id) {   
    var img = document.getElementById(id);
    if(!img.filters) return;
    var alpha = img.filters["Alpha"];
    alpha.Opacity -= 5;
    if(alpha.Opacity > 20)
        setTimeout("fadeOut('" + id + "')", 100);
}  
function SHT (id) {
    if(!document.getElementById) return;
            obj = document.getElementById(id);
        obj.style.visibility = "hidden";
 }


function on(id) { 
 document.images[id].src="BUT/" + id + "2.gif" ;
}

function on2 (id) { var str;
document.images[id].src="BUT/" + id + "2.gif" ;
 switch(id){
    case "i1":str ="BUT/top2.gif"  ;break;
    case "i2":str ="BUT/Gyoum2.gif" ;break;
    case "i3":str ="BUT/tizu2.gif"  ;break;
    case "i4":str ="BUT/Annai2.gif"  ;break;
    case "i5":str ="BUT/toi2.gif"  ;break;
     } 
}
function of (id) { 
   document.images[id].src="BUT/" + id + ".gif" ;
}