Static toggling function for a single element - could be a button, sliding panel etc

toggle.js

function toggle() {
	if($('#toggleElement').data("toggledOn")) { // Turn off
		$('#toggleElement').data("toggledOn",false);
		/* Do something */
	} else {                                    // Turn on
		$('#toggleElement').data("toggledOn",true);
		/* Do something */
	}
}