function swapActive(prve,druhe,prveStyl,druheStyl,div1,div2) {

		document.getElementById(prve).id=prveStyl;
		document.getElementById(druhe).id=druheStyl;

		if (prve=='najsledovanejsie') {
			document.getElementById('najnovsieDiv').style.display='none';
			document.getElementById('najsledovanejsieDiv').style.display='block';
		}

		else if (prve=='najnovsie_off') {
			document.getElementById('najnovsieDiv').style.display='block';
			document.getElementById('najsledovanejsieDiv').style.display='none';
		}

}

function swap(active,newID) {

	var parent = document.getElementById('parentElement'); // parent element
	var links = parent.getElementsByTagName('a'); // get all links (<a> tags) in parent element

	elements = new Array();

	for (var i in links) { // store all IDs of <a> tags in array

		if(links[i].id!=undefined) {

			elements[i] = links[i].id;

		}

	}

	for (var i in elements) { // loop through array and activate/deactivate links

		var regex= new RegExp("[a-zA-Z]*_off", "i"); // deactivated element MUST be called like "anything_off" (_off at the end)
		var match = regex.exec(elements[i]);

		if (match == null) { // means, element is active (highlighted), i need to deactivate it.
			document.getElementById(elements[i]).id=elements[i]+'_off';
			document.getElementById(elements[i]+'_div').style.display='none'; // hide displayed div
		}

		if(elements[i]==active) {
			document.getElementById(active).id=newID; //highlight button
			document.getElementById(newID+'_div').style.display='block'; // display hidden div
		}


	}

}

function showMore(prve,druhe,prveStyl,druheStyl,div1,div2) {

		document.getElementById(prve).id=prveStyl;
		document.getElementById(druhe).id=druheStyl;

		if (prve=='najsledovanejsie') {
			document.getElementById('najnovsieDiv').style.display='none';
			document.getElementById('najsledovanejsieDiv').style.display='block';
		}

		else if (prve=='najnovsie_off') {
			document.getElementById('najnovsieDiv').style.display='block';
			document.getElementById('najsledovanejsieDiv').style.display='none';
		}

}