//图片滚动var s=function(){	var interv=2000; //切换间隔时间	var interv2=10; //切换速度	var opac1=70; //文字背景的透明度	var source="show" //焦点轮换图片容器的id名称	//获取对象	function getTag(tag,obj){		if(obj==null){			return document.getElementsByTagName(tag);		}else{			return obj.getElementsByTagName(tag);		}	}	function getid(id){		return document.getElementById(id);	};	var opac=0,j=0,t=63,num,scton=0,timer,timer2,timer3;	var id=getid(source);	id.removeChild(getTag("div",id)[0]);	var li=getTag("li",id);	var div=document.createElement("div");	var title=document.createElement("div");	var span=document.createElement("span");	var button=document.createElement("div");	button.className="button";	for(var i=0;i<li.length;i++){		var a=document.createElement("a");		a.innerHTML=i+1;		a.onclick=function(){			clearTimeout(timer);			clearTimeout(timer2);			clearTimeout(timer3);			j=parseInt(this.innerHTML)-1;			scton=0;			t=63;			opac=0;			fadeon();		};		a.className="b1";		a.onmouseover=function(){			this.className="b2";		};		a.onmouseout=function(){			this.className="b1";sc(j);		};		button.appendChild(a);	}	//控制图层透明度	function alpha(obj,n){		if(document.all){			obj.style.filter="alpha(opacity="+n+")";		}else{			obj.style.opacity=(n/100);		}	}	//控制焦点按钮	function sc(n){		for(var i=0;i<li.length;i++){			button.childNodes[i].className="b1";		};		button.childNodes[n].className="b2";	}	title.className="num_list";	title.appendChild(span);	alpha(title,opac1);	id.className="d1";	div.className="d2";	id.appendChild(div);	id.appendChild(title);	id.appendChild(button);	//渐显	var fadeon=function(){		opac+=5;		div.innerHTML=li[j].innerHTML;		span.innerHTML=getTag("img",li[j])[0].alt;		alpha(div,opac);		if(scton==0){			sc(j);			num=-2;			scrolltxt();			scton=1;		};		if(opac<100){			timer=setTimeout(fadeon,interv2);		}else{			timer2=setTimeout(fadeout,interv);		}	};	//渐隐	var fadeout=function(){		opac-=5;		div.innerHTML=li[j].innerHTML;		alpha(div,opac);		if(scton==0){			num=2;			scrolltxt();			scton=1;		}		if(opac>0){			timer=setTimeout(fadeout,interv2);		}else{			if(j<li.length-1){				j++;			}else{			j=0;			}			fadeon();		}	};	//滚动文字	var scrolltxt=function(){		t+=num;		span.style.marginTop=t+"px";		if(num<0 && t>3){			timer3=setTimeout(scrolltxt,interv2);		}else if(num>0 && t<62){			timer3=setTimeout(scrolltxt,interv2);		}else{			scton=0		}	};	fadeon();}//初始化window.onload=s;
//图片无缝滚动
$.fn.imgscroll = function(o){
	var defaults = {
		speed: 40,
		amount: 0,
		width: 1,
		dir: "left"
	};
	o = $.extend(defaults, o);
	return this.each(function(){
		var _li = $("li", this);
		_li.parent().parent().css({overflow: "hidden", position: "relative"}); //div
		_li.parent().css({margin: "0", padding: "0", overflow: "hidden", position: "relative", "list-style": "none"}); //ul
		_li.css({position: "relative", overflow: "hidden"}); //li
		if(o.dir == "left") _li.css({float: "left"});
		//初始大小
		var _li_size = 0;
		for(var i=0; i<_li.size(); i++)
			_li_size += o.dir == "left" ? _li.eq(i).outerWidth(true) : _li.eq(i).outerHeight(true);
		//循环所需要的元素
		if(o.dir == "left") _li.parent().css({width: (_li_size*3)+"px"});
		_li.parent().empty().append(_li.clone()).append(_li.clone()).append(_li.clone());
		_li = $("li", this);
		//滚动
		var _li_scroll = 0;
		function goto(){
			_li_scroll += o.width;
			if(_li_scroll > _li_size)
			{
				_li_scroll = 0;
				_li.parent().css(o.dir == "left" ? { left : -_li_scroll } : { top : -_li_scroll });
				_li_scroll += o.width;
			}
				_li.parent().animate(o.dir == "left" ? { left : -_li_scroll } : { top : -_li_scroll }, o.amount);
		}
		//开始
		var move = setInterval(function(){ goto(); }, o.speed);
		_li.parent().hover(function(){
			clearInterval(move);
		},function(){
			clearInterval(move);
			move = setInterval(function(){ goto(); }, o.speed);
		});
	});
};
//留言版判空表单#form
    function checkForm()
    {
    	var flag = true;
    	$('#guestbook').find('input[required]').each(function() {
    		var obj = $(this);
    		if($.trim(obj.val()) == '')
    		{
    			var label = obj.parent().parent().find('.titles').text().replace(/：/, '');
    			label = label.replace('*','');
    			var str = '请填写' + label + '！';
    			alert(str);
    			obj.focus();
    			flag = false;
    			return false;
    		}
    	});
    	if(flag == true)
    	{
    		$('#form').submit();
    	}
    };
        // 验证搜索
         function checkFormS()
     {
     	var gosubmit = true;
     	var seastr = document.getElementById("SeaStr");
     	if(seastr.value == '' || seastr.value == '请输入搜索关键词' || seastr.value == '请输入您想搜索的内容')
     	{
     		gosubmit = false;
     		alert('请输入搜索内容!');
     		seastr.focus();
     	}
     	return gosubmit;
     }