//图片切换
var _c = _h = 0;

$(function(){
    $('#play > span').mouseover(function(){
        var _i = $(this).attr('alt') - 1;
        clearInterval(_h);
        _c = _i;
        play();
        change(_i);        
    })
    $("#pic img").hover(
		function(){clearInterval(_h)}, 
		function(){play()}
	);
    play();
})


function play()
{
    _h = setInterval("auto()", 5000);
}
function change(i)
{
    $('#play > span').removeClass('on').eq(i).addClass('on');
    $("#pic img").hide().eq(i).fadeIn(1000);
}
function auto()
{    
    _c = _c > 3 ? 0 : _c + 1;
    change(_c);
}

//下拉滚动图片
function z101_slide(){
	$('#z101_big').slideUp(1000,function(){$('#z101_small').slideDown(1000);});	
}
window.onload = function(){
	setTimeout("$('#z101_big').slideDown(1000)",1000);
	setTimeout('z101_slide()',6000);
}