$(document).ready(function(){
	$("#blcd li ul").hide();
	$("#blcd li").bind('click',function() { 
		$(this).siblings().find('.xzimg').attr("src","/r/cms/www/red/images/lefticon.jpg");
		var tpsrc= $(this).find('.xzimg').attr("src");
		if(tpsrc=="/r/cms/www/red/images/lefticon.jpg"){
			$(this).find('.xzimg').attr("src","/r/cms/www/red/images/lefticon2.jpg"); 
		}else if(tpsrc=="/r/cms/www/red/images/lefticon2.jpg"){
			$(this).find('.xzimg').attr("src","/r/cms/www/red/images/lefticon.jpg"); 
		}
		$(this).siblings().find('ul').hide();
		$(this).find('ul').slideToggle();
	}); 
	$("#blcd li").find("ul").click(function(event){
		event.stopPropagation();//阻止子节点事件冒泡
	}) ;
});