$(document).ready(function() {

	var tabContents = $(".tab_content").hide();
    var tabs = $("ul.tabs li");

	tabs.first().addClass(" active").show();
	tabContents.first().show();

	tabs.click(function() {
		select_tab($(this),tabContents);	
		return false;
	});
		
	var tabIndex = $.parseQuery().tab;
	if (tabIndex) {
		select_tab_by_index(tabIndex);
	}
});

function select_tab(tab, content) {	
	if(!tab.hasClass('active')){
		content = content || $(".tab_content").hide();
		var activeTab = tab.find('a').attr('href');
		tab.addClass('active').siblings().removeClass('active');
		content.hide().filter(activeTab).fadeIn(500);
	}
}

function select_tab_by_index(index) {
	select_tab($("ul.tabs li").eq(index));
	return false;
}