$_currslider   = 0;  
$_int					 = null;

window.addEvent('domready', function(){
  $_int        = shgetid.periodical(8000);
});

function shgetid() {
  if($("gal_"+(shcurrslider($_currslider)+1)) == null) {
    shslide(0);
  } else {
    shslide(shcurrslider($_currslider)+1);
  }
}

function shslide($id) {
	if($id != shcurrslider($_currslider)) {
    $("gal_"+shcurrslider($_currslider)).removeClass('active');
    $("gal_"+$id).addClass('active');
    
	$(('slide_'+$_currslider)).setStyle('z-index',50);
	$(('slide_'+$id)).setStyles({
	  'z-index'		: 100,
	  'display'		: 'block',
	  'opacity'     : 0
	});
	
	$(('slide_data_'+$_currslider)).setStyle('z-index',602);
	$(('slide_data_'+$id)).setStyles({
	  'z-index'		: 603,
	  'display'		: 'block',
	  'opacity'   : 0
	});
	
	$(('slide_data_'+$_currslider)).tween('opacity',0);
	$(('slide_'+$id)).tween('opacity',1);
	
	$(('slide_data_'+$_currslider)).tween('opacity',0);
	$(('slide_data_'+$id)).tween('opacity',1);
	
	//$(('slide_'+$_currslider)).tween('opacity','.5');
	
	//alert('slide_'+$_currslider+' | '+'slide_'+$id);
	
	//$('sh_slideshow_list').tween('top', ('-'+(($id*346)+($id*2))));
    $_currslider = $id;
	
	if($_int !== null) {
		$clear($_int);
  }
	
	$_int = shgetid.periodical(8000);
  }
}

function shcurrslider($curr) {
  if($curr == null || $curr == undefined || $curr < 0) {
    return 0;
  } else {
    return $curr;
  }
}