cur_r_level = 0;
cur_s_level = 0;
cur_y_level = 0;
cur_z_level = 0;
$(document).ready(function(){

	$("div[id^=menu]").click(function(){
	$("div[id^=div]").css("display","none");
	var str=$(this).attr("id");
	var strs= str.substring(4);
	$("#div"+strs).css("display","block");
   });
  
   $("li[id^=d_lv]").hover(
		function(){
			//$("li[id^=d_lv]").width('17px');
			


			
			var div_id = $(this).attr("id");


			switch(div_id.substring(4,5))
			{
				case 'r':
					var hide_li_id = "#d_lvr" + cur_r_level;
					var bpx = cur_r_level*(-31);
					cur_r_level = div_id.substring(5);
					
					break
				case 's':
					var hide_li_id = "#d_lvs" + cur_s_level;
					var bpx = cur_s_level*(-31);
					cur_s_level = div_id.substring(5);
					break
				case 'y':
					var hide_li_id = "#d_lvy" + cur_y_level;
					var bpx = cur_y_level*(-31);
					cur_y_level = div_id.substring(5);
					break
				case 'z':
					var hide_li_id = "#d_lvz" + cur_z_level;
					var bpx = cur_z_level*(-31);
					cur_z_level = div_id.substring(5);
					break
			}
			$(hide_li_id).width('17px');
			var hide_pos = bpx+"px top";
			$(hide_li_id).css("backgroundPosition",hide_pos);

			$(this).width('31px');
			var new_pos_x = div_id.substring(5)*(-31);

			new_pos_x = new_pos_x + "px";
			var new_pos = new_pos_x + " bottom";
			$(this).css("backgroundPosition",new_pos);
			var new_div_id = "#"+div_id.substring(4);
			var hide_div_id = "div[id^="+div_id.substring(4,5)+"]";
			$(hide_div_id).css("display","none");
			$(new_div_id).css("display","block");
	
		},
	    function(){
			//$(this).width('17px');	
			//var div_id = $(this).attr("id");
			//var new_pos_x = div_id.substring(5)*(-31);
			//new_pos_x = new_pos_x + "px";
			//var new_pos = new_pos_x + " top";
			//$(this).css("backgroundPosition",new_pos);
			
		}
		);
});