document.observe("dom:loaded", function() {
    // tabsFocus(2);
});
diaporamaImgCenter=function(e){
    e.show();
    e.style.left=parseInt((e.up().offsetWidth-e.offsetWidth)/2)+'px';
}
tabsFocus=function(tabIdx){
    if (tabsEffectRunning==true) return;
    var e=$$('.tabs_element')[tabIdx];
    if (e.hasClassName('focus')) return;
    $$('#tabs_btn a').invoke('removeClassName','focus');
    $$('#tabs_btn a')[2-tabIdx].addClassName('focus');
    e.setOpacity(0);
    e.addClassName('appearing');
    tabsEffectRunning=true;
    new Effect.Opacity(e, {
        from: 0,
        to: 1,
        duration: 0.5 ,
        afterFinish:function(){
            $$('#tabs_content .focus').invoke('removeClassName','focus');
            e.addClassName('focus');
            e.removeClassName('appearing');
            tabsEffectRunning=false;
        }
    });
}
tabsEffectRunning=false