function activate(P) {
	for(var i=1; i<=cnt; i++) {
		var panel = document.getElementById('tab_description_'+i);
		var tab = document.getElementById('tab'+i);
		if(i==P) {
		//wybrana
			panel.style.display = 'block';
			tab.className = 'one_tab_active';
		  	document.forms['contact'].title.value=tab.innerHTML;
		  	document.forms['contact'].send_to.value=emails[i];
		} else {
			panel.style.display = 'none';
			tab.className = 'one_tab';
		}
	}
}