var flag_gallery=0;

function gallery_change(id){
	if ($('gallery_image'+id)){
		var drop = $('dom_gal');
		//var dropFx = drop.effect('background-color', {wait: false}); // wait is needed so that to toggle the effect,
		
		var item=$('gallery_image'+id);
		
		drop.removeEvents();
		drop.empty();
		var a = item.clone();
		a.id='';
		a.style.width='auto';
		a.className='';
		a.inject(drop);

		$("legenda").innerHTML=a.alt;
		//dropFx.start('ffffff').chain(dropFx.start.pass('ffffff', dropFx));
	
		flag_gallery=id;
	}
	return false;
}

function gallery_move(steep){
	id=flag_gallery+steep;
	if (!document.getElementById('gallery_image'+id)){
		id=0;
	}
	if (document.getElementById('gallery_image'+id)){
		gallery_change(id);
	}
	return false;
}