var timer = null;
var offset = 4000;
var index = 0;

//ͼֻ
function slideimage(i){
    var id = 'image_'+ target[i];
    $('#'+ id)
        .animate({opacity: 1}, 800, function(){
            /*$(this).find('.word').animate({height: 'show'}, 'slow');*/
        }).show()
        .siblings(':visible')
        .find('.word').animate({height: 'hide'},'fast',function(){
            $(this).parent().animate({opacity: 0}, 800).hide();
        });
}
//bind thumb a
/*function hookthumb(){*/
  /*  $('#thumbs li a')
        .bind('click', function(){
            if (timer) {
                cleartimeout(timer);
            }
            var id = this.id;
            index = getindex(id.substr(6));
            rechange(index);
            slideimage(index);
            timer = window.settimeout(auto, offset);
            this.blur();
            return false;
        });
        */
/* $('#thumbs li a')
        .hover( function(){
            if (timer) {
                cleartimeout(timer);
            }
            var id = this.id;
            index = getindex(id.substr(6));
            rechange(index);
            slideimage(index);
            timer = window.settimeout(auto, offset);
            this.blur();

        },function(){return false;});*/







/*}*/
//bind next/prev img
/*function hookbtn(){
    $('#thumbs li img').filter('#play_prev,#play_next')
        .bind('click', function(){
            if (timer){
                cleartimeout(timer);
            }
            var id = this.id;
            if (id == 'play_prev') {
                index--;
                if (index < 0) index = 6;
            }else{
                index++;
                if (index > 6) index = 1;
            }
            rechange(index);
            slideimage(index);
            timer = window.settimeout(auto, offset);
        });
}*/
//get index
function getindex(v){
    for(var i=0; i < target.length; i++){
        if (target[i] == v) return i;
    }
}
function rechange(loop){
    var id = 'thumb_'+ target[loop];
    $('#thumbs li a.current').removeclass('current');
    $('#'+ id).addclass('current');
}
function auto(){
	 var jsnum= $(".banner .ban_pic .image img").size();
	
    index++;
    if (index > jsnum){
        index = 1;
    }
    rechange(index);
    slideimage(index);
    timer = window.settimeout(auto, offset);
}
$(function(){
    //change opacity
    $('div.word').css({opacity: 0.85});
    auto();
   /* hookthumb();
    hookbtn();*/

});