/**
 * @author Andy Gocke
 */
function switchMainImg(nextImg) {
	var $next;
	var $nextButton;
	switch(nextImg) {
	case 'vision':
		$next = $("#mainImg_vision");
		$nextButton = $("li#vision");
		break;
	case 'prio':
		$next = $("#mainImg_prio");
		$nextButton = $("li#prio");
		break;
	case 'endorse':
		$next = $("#mainImg_endorse");
		$nextButton = $("li#endorse");
		break;
	}
	if(!$next.hasClass("active")) {
		$('li.active').removeClass("active");
		$nextButton.addClass("active");
		var $active = $("#mainBox div.active");
		$active.animate({opacity:0.0})
		$next.css({opacity:0.0})
			.css("z-index","3")
			.addClass("active")
			.animate({opacity:1.0},1000,function() {
				$active.removeClass("active");
				$active.css("z-index","2");
			});
	}
}