$(document).ready(function() {
	$leftNavLinks = $('div.left-col a');
	$leftNavLinks.each(function(index) {
		this.origClass = this.className;
		$(this).click(function(event) {
			$leftNavLinks.each(function(index) {
				this.className = this.origClass;							
			});
			this.className += '-on';
		});						
	});
});