$(function(){
	var knowAbouts = $('#know-about-options li');
	if (knowAbouts.size() > 1) {
		knowAbouts.click(selectKnowAboutTab);
		selectKnowAboutTab();
	}
});

function selectKnowAboutTab(ev) {
	var selection = (typeof ev == 'undefined') ? $('#know-about-options li').get(0) : this;
	var tabName = selection.id.replace('option-', '');

	$('#know-about-sections .section').hide();
	$('#know-about-options li').removeClass('active');
	$('#know-about-' + tabName).show();
	$(selection).addClass('active');
}