//首页大广告
var screenshowtime = 3000; //播放时间
var screentime = null;

function open_screen(showbtn){
var str=$('.screenfull .screenfcon').html();
$('.screenfull .screenfcon').html("<a href='/newslist/281.html'>"+str+"</a>");
    $('.screenfull .screenfcon').show();
     screentime = settimeout(close_screen,screenshowtime);
}
function close_screen(){
    $('.screenfull .screenfcon').slideup(500,function(){
        $('.screenfclose').hide();
        $('.screenfreplay').show();
    });
}
$('.screenfclose').click(function(){
    if(screentime){cleartimeout(screentime);}
    close_screen();
    return false;
});
$('.screenfreplay').click(function(){
    if(screentime){cleartimeout(screentime);}
    open_screen(false);
    $('.screenfreplay').hide();
    $('.screenfclose').show();
    return false;
});



$('.screenfull ').hide();
 settimeout(open_screen,1);