function selectTab(mytab, mycontent) {
	$$('#tabs .tab_selected').each( function(e) {
		e.className = 'tab_normal';
	});
	mytab.className = 'tab_selected';
	
	$$('#produs_detalii_desc div').each( function(e) {
		e.style.display = 'none';
	});
	$(mycontent).style.display = 'block';
}
///////

function sw_display( id )
{
	if($(id).style.display == 'block')
	{
		$(id).style.display = 'none';
	}else
	{
		$(id).style.display = 'block';
	}
}
//////

function validate_frm_comentariu()
{
	var nr_err = 0;
	
	if( document.frm_comentariu.Nickname.value.length == 0 )
	{ 
		if( !$('frm_comentariu_span_nickname').hasClassName('red') ) $('frm_comentariu_span_nickname').addClassName('red');
		nr_err++;
	}else
	{
		if( $('frm_comentariu_span_nickname').hasClassName('red') ) $('frm_comentariu_span_nickname').removeClassName('red');
	}
	
	if( document.frm_comentariu.Mesaj.value.length == 0 )
	{ 
		if( !$('frm_comentariu_span_mesaj').hasClassName('red') ) $('frm_comentariu_span_mesaj').addClassName('red');
		nr_err++;
	}else
	{
		if( $('frm_comentariu_span_mesaj').hasClassName('red') ) $('frm_comentariu_span_mesaj').removeClassName('red');
	}

	
	if(nr_err >0)
	{
		if( $('err_msg_comentariu').style.display == 'none' ) $('err_msg_comentariu').style.display = 'block';
		return false;
	}
	
	if( $('err_msg_comentariu').style.display == 'block' ) $('err_msg_comentariu').style.display = 'none';
	return true;
}
//////

function fade_banners(ob)
{	
	var index_banner_curent = 0;
	var a_banner_elements;
	a_banner_elements = ob.childElements();
	
	if(a_banner_elements.length >1)
	{
		loop_banner = new PeriodicalExecuter(function(pe) {
				var key_banner_curent;
				var banner_img;
				
				index_banner_curent = (index_banner_curent >= a_banner_elements.length) ? 1 : index_banner_curent+1 ;
				
				key_banner_curent = index_banner_curent - 1;
				key_banner_urmator = (key_banner_curent+1 >= a_banner_elements.length) ? 0 : key_banner_curent+1;
								
				banner_switch = new Effect.Parallel([
				  new Effect.Appear( a_banner_elements[key_banner_urmator], { duration: 1 }), 
				  new Effect.Fade( a_banner_elements[key_banner_curent], { duration: 1 }) 
				], { 
				  duration: 0.5,
				  delay: 0.0,
				  sync: true
				});
				banner_switch = null;
				
				//console.log(" key:"+ key_banner_curent + " key_urmator:"+ key_banner_urmator+ " ob_curent:"+a_banner_elements[key_banner_curent] + " ob_urmator:"+a_banner_elements[key_banner_urmator] );
				
			}, 5);
	}
	
	return true;
}
//////

//main
Event.observe(window, 'load', function() {		
	fade_banners( $('bnr_box') );
	
});