function animate_chat_bar(){
var menu = document.getElementById('floatLayer');
var width = document.compatMode=='CSS1Compat' && !window.opera?document.documentElement.clientWidth:document.body.clientWidth;
var height = document.compatMode=='CSS1Compat' && !window.opera?document.documentElement.clientHeight:document.body.clientHeight;
scrollleft = document.body.scrollLeft;
scrolltop = document.body.scrollTop; 
menu.style.top = scrolltop+height-30+"px";
}
function reset_stanze(){
document.getElementById('chat-lista-amici').style.display = 'none';
document.getElementById('chat-lista-amici-tab').className = 'chat-tab-inactive';
document.getElementById('nome-lista-chat').innerHTML = '<a href="javascript:apri_lista_amici()">Lista Amici</a>';

var totale = stanze.length;
for (a=0;a<totale;a++) {
var id_stanza = stanze[a];
if(document.getElementById('chat-window-'+id_stanza) !== null){
var obj = document.getElementById('chat-window-'+id_stanza);
obj.style.display = 'none';
document.getElementById('chat-tab-'+id_stanza).className = 'chat-tab-inactive';
}
}
}
function scroll_tab_left(offset, left){
reset_stanze();
document.getElementById('scroll-tab-right-action').href= "javascript:void(null)";
document.getElementById('scroll-tab-left-action').href= "javascript:void(null)";if(offset == 0){
var left = document.getElementById('chat-bar-list').style.left;
var left = parseInt(left);
}
if(offset>110  || left >= 0){
document.getElementById('scroll-tab-right-action').href= "javascript:scroll_tab_right(0, '')";
document.getElementById('scroll-tab-left-action').href= "javascript:scroll_tab_left(0, '')";
}
else{
document.getElementById('chat-bar-list').style.left = left+offset+"px";
scrolltab = setTimeout("scroll_tab_left("+parseInt(offset+5)+","+left+")", 10);
}
}
function scroll_ultimo_e_apri(offset, left, stanza){

var max_width= stanze.length*110;
document.getElementById('scroll-tab-right-action').href= "javascript:void(null)";
document.getElementById('scroll-tab-left-action').href= "javascript:void(null)";

if(offset == 0){
var left = document.getElementById('chat-bar-list').style.left;
var left = parseInt(left);
}
if((left-offset) < -(stanze.length-3)*110){
document.getElementById('scroll-tab-right-action').href= "javascript:scroll_tab_right(0, '')";
document.getElementById('scroll-tab-left-action').href= "javascript:scroll_tab_left(0, '')";

apri_stanza_utente(stanza);

}
else{
document.getElementById('chat-bar-list').style.left = left-offset+"px";
scrolltab = setTimeout("scroll_ultimo_e_apri("+parseInt(offset+10)+","+left+","+stanza+")", 10);
}
}

function scroll_tab_right(offset, left){
reset_stanze();

var max_width= stanze.length*110;
document.getElementById('scroll-tab-right-action').href= "javascript:void(null)";
document.getElementById('scroll-tab-left-action').href= "javascript:void(null)";if(offset == 0){
var left = document.getElementById('chat-bar-list').style.left;
var left = parseInt(left);
}
if(offset>110 || left <= -(stanze.length-3)*110){
document.getElementById('scroll-tab-right-action').href= "javascript:scroll_tab_right(0, '')";
document.getElementById('scroll-tab-left-action').href= "javascript:scroll_tab_left(0, '')";}
else{
document.getElementById('chat-bar-list').style.left = left-offset+"px";
scrolltab = setTimeout("scroll_tab_right("+parseInt(offset+5)+","+left+")", 10);
}
}