Make Dropdown Menu work on Touch devices

dropdown.js

function isTouchDevice() {
	return 'ontouchstart' in document.documentElement;
}


		// Hack to make dropdown menu work on touch devices
		var el = $('#main-nav ul.nav > li.dropdown-large a.dropdown-toggle');
		
		
		/* If mobile browser, prevent click on parent nav item from redirecting to URL */
		if ( isTouchDevice() ) {
			
			$(el).click(function(event) {
				event.preventDefault();
				$(el).click(function(event) {
					event.preventDefault();
					location.href = $(el).attr('href');
				});
			
			});

		} else {

		}