function my_show(element)
{
	var nodes = document.getElementsByClassName(element)

	var h = document.getElementById('test').offsetHeight;

	var tak = 0;

	for (i=0; i<nodes.length; i++) {
		if(nodes[i].className!='show_tr')
		{
			tak=1;
		}

	//zmiana klasy dla tr
		nodes[i].className='show_tr'

		if(tak==1)
		{
			document.documentElement.scrollTop = h-100;
			tak = 0;
		}
	}

	var ilosc = element.toString().substr(2)

	if(parseInt(ilosc)<=parseInt(document.getElementById('js_maxilosc').innerHTML))
	{
		document.getElementById('js_ilosc').innerHTML = ilosc;
	}
}