var flag = 0;
function showList(id_menu,id_list,id_up){
	
    var my_menu = document.getElementById(id_menu);
    var my_list = document.getElementById(id_list);
    var my_up = document.getElementById(id_up);
    if(my_list.style.display=="none" || my_list.style.display==""){
        my_list.style.display="block";
        my_up.style.display='block';
        my_menu.style.backgroundPosition='0 0';
        $("body").bind("click",function(){
            if(flag == 0 ){
                flag++;
                return false;
            }else{
                my_list.style.display="none";
                my_up.style.display='none';
                my_menu.style.backgroundPosition='0 -19px';
                flag = 0;
                $("body").unbind("click");
            }
        });
    } else {
        my_list.style.display="none";
        my_up.style.display='none';
        my_menu.style.backgroundPosition='0 -19px';
    }
}