function pdTabs(tabsetId, useBlocks){
    
	var appTabs = document.getElementById(tabsetId).getElementsByTagName('a');
	
    if (appTabs.length) {
		$(appTabs[0]).addClass('active');
	}
	if (useBlocks) {
	   for (var i = 0; i < appTabs.length; i++) {
			appTabs[i].onclick = new Function("switchBlock(" + i + "); return false;");
			document.getElementById(appTabs[i].id + '-block').style.display = "none";
		}
		document.getElementById(appTabs[0].id + '-block').style.display = "block";
		$('#' + appTabs[0].id + '-block').removeClass('x-hidden');
	}
}

function switchBlock(i){
    var elem = document.getElementById('app-tabs').getElementsByTagName('a');
    
    for (var j = 0; j < elem.length; j++) {
        elem[j].className = "";
        document.getElementById(elem[j].id + '-block').style.display = "none";
    }
    document.getElementById(elem[i].id + '-block').style.display = "block";
    $('#' + elem[i].id + '-block').removeClass('x-hidden');
    elem[i].className = "active";
}
/*end of tabs*/