// dustin diazz dollar function
function $() {
	var elements = new Array();
	for (var i = 0; i < arguments.length; i++) {
		var element = arguments[i];
		if (typeof element == 'string')
			element = document.getElementById(element);
		if (arguments.length == 1)
			return element;
		elements.push(element);
	}
	return elements;
}


function toggle(obj) {
	var el = $(obj);
	el.style.display = (el.style.display != 'none' ? 'none' : '' );
}

function togglestate(obj,cls) {
	var el = $(obj);
	el.className = (el.className != cls ? cls : '' );
}


var last_tab = 'sec1';

function show(el_Id) {
var el = document.getElementById(el_Id);
el.style.display = 'block';
}

function hide(el_Id) {
var el = document.getElementById(el_Id);
el.style.display = 'none';
}


function show_next(tab_name,tabclass) {
var cl = document.getElementById(last_tab);
cl.className = tabclass;

var curr = document.getElementById(tab_name);
togglestate(curr,tabclass+'_hover');
hide(last_tab+'_data');
show(tab_name+'_data');
last_tab = tab_name;
}