$(document).ready(function(){
	$('body').click(function(event) {
		if ($(event.target).is('li.mainnavlink')) {
			// first track the current state of the clicked object
			var initstateopen;
			if ($(event.target).children('ul').css('display')=='block') {
				initstateopen=true;
			} else {
				initstateopen=false;
			}
			// then close all open subnavs
			$("li.mainnavlink").children('ul').slideUp(250);
			
			// if the original state was closed, open it, otherwise leave it closed
			if (initstateopen==false) {
				$(event.target).children('ul').slideDown(250);
			}
			
			
		}
	}); // 'body'.click
	
}); // document.ready