var g_teaser_active = 1;

function show_teaser(teaser_nr) {
	if(g_teaser_active != teaser_nr && teaser_nr >= 1 && teaser_nr <= 4) {
		hide_all_teaser();
		show_teaser_nr(teaser_nr);
		g_teaser_active = teaser_nr;
	}
	return false;
}

function hide_all_teaser() {
	for(var i = 1; i <= 4; i++) {
		document.getElementById('teaser' + i).style.display = 'none';
		document.getElementById('link' + i).style.backgroundPosition = 'top left';
	}
}

function show_teaser_nr(teaser_nr) {
	document.getElementById('teaser' + teaser_nr).style.display = 'block';
	
	//document.getElementById('teaserImg' + teaser_nr).style.display = 'block';
	crnt_img = document.getElementById('teaserImg' + teaser_nr).src;
	if(crnt_img.substring(crnt_img.lastIndexOf("/") + 1, crnt_img.lastIndexOf(".")) === 'transparent') {
		//alert('changed');
		document.getElementById('teaserImg' + teaser_nr).src = g_tpl_path + 'img/modules/home/teaser_111103_' + teaser_nr + '.jpg';
	}
	
	document.getElementById('link' + teaser_nr).style.backgroundPosition = 'top right';
}


function link_teaser_over(link_nr) {
	if(g_teaser_active != link_nr && link_nr >= 1 && link_nr <= 4) {
		document.getElementById('link' + link_nr).style.backgroundPosition = 'top right';
	}
	return false;
}

function link_teaser_out(link_nr) {
	if(g_teaser_active != link_nr && link_nr >= 1 && link_nr <= 4) {
		document.getElementById('link' + link_nr).style.backgroundPosition = 'top left';
	}
	return false;
}