var tween = {
	linear: function(t,b,c,d){ return c*t/d + b; },
	quad: {
		easein: function(t,b,c,d){
			return c*(t/=d)*t + b;
		},
		easeout: function(t,b,c,d){
			return -c *(t/=d)*(t-2) + b;
		},
		easeinout: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t + b;
			return -c/2 * ((--t)*(t-2) - 1) + b;
		}
	},
	cubic: {
		easein: function(t,b,c,d){
			return c*(t/=d)*t*t + b;
		},
		easeout: function(t,b,c,d){
			return c*((t=t/d-1)*t*t + 1) + b;
		},
		easeinout: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t*t + b;
			return c/2*((t-=2)*t*t + 2) + b;
		}
	},
	quart: {
		easein: function(t,b,c,d){
			return c*(t/=d)*t*t*t + b;
		},
		easeout: function(t,b,c,d){
			return -c * ((t=t/d-1)*t*t*t - 1) + b;
		},
		easeinout: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t*t*t + b;
			return -c/2 * ((t-=2)*t*t*t - 2) + b;
		}
	},
	quint: {
		easein: function(t,b,c,d){
			return c*(t/=d)*t*t*t*t + b;
		},
		easeout: function(t,b,c,d){
			return c*((t=t/d-1)*t*t*t*t + 1) + b;
		},
		easeinout: function(t,b,c,d){
			if ((t/=d/2) < 1) return c/2*t*t*t*t*t + b;
			return c/2*((t-=2)*t*t*t*t + 2) + b;
		}
	},
	sine: {
		easein: function(t,b,c,d){
			return -c * math.cos(t/d * (math.pi/2)) + c + b;
		},
		easeout: function(t,b,c,d){
			return c * math.sin(t/d * (math.pi/2)) + b;
		},
		easeinout: function(t,b,c,d){
			return -c/2 * (math.cos(math.pi*t/d) - 1) + b;
		}
	},
	expo: {
		easein: function(t,b,c,d){
			return (t==0) ? b : c * math.pow(2, 10 * (t/d - 1)) + b;
		},
		easeout: function(t,b,c,d){
			return (t==d) ? b+c : c * (-math.pow(2, -10 * t/d) + 1) + b;
		},
		easeinout: function(t,b,c,d){
			if (t==0) return b;
			if (t==d) return b+c;
			if ((t/=d/2) < 1) return c/2 * math.pow(2, 10 * (t - 1)) + b;
			return c/2 * (-math.pow(2, -10 * --t) + 2) + b;
		}
	},
	circ: {
		easein: function(t,b,c,d){
			return -c * (math.sqrt(1 - (t/=d)*t) - 1) + b;
		},
		easeout: function(t,b,c,d){
			return c * math.sqrt(1 - (t=t/d-1)*t) + b;
		},
		easeinout: function(t,b,c,d){
			if ((t/=d/2) < 1) return -c/2 * (math.sqrt(1 - t*t) - 1) + b;
			return c/2 * (math.sqrt(1 - (t-=2)*t) + 1) + b;
		}
	},
	elastic: {
		easein: function(t,b,c,d,a,p){
			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
			if (!a || a < math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*math.pi) * math.asin (c/a);
			return -(a*math.pow(2,10*(t-=1)) * math.sin( (t*d-s)*(2*math.pi)/p )) + b;
		},
		easeout: function(t,b,c,d,a,p){
			if (t==0) return b;  if ((t/=d)==1) return b+c;  if (!p) p=d*.3;
			if (!a || a < math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*math.pi) * math.asin (c/a);
			return (a*math.pow(2,-10*t) * math.sin( (t*d-s)*(2*math.pi)/p ) + c + b);
		},
		easeinout: function(t,b,c,d,a,p){
			if (t==0) return b;  if ((t/=d/2)==2) return b+c;  if (!p) p=d*(.3*1.5);
			if (!a || a < math.abs(c)) { a=c; var s=p/4; }
			else var s = p/(2*math.pi) * math.asin (c/a);
			if (t < 1) return -.5*(a*math.pow(2,10*(t-=1)) * math.sin( (t*d-s)*(2*math.pi)/p )) + b;
			return a*math.pow(2,-10*(t-=1)) * math.sin( (t*d-s)*(2*math.pi)/p )*.5 + c + b;
		}
	},
	back: {
		easein: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158;
			return c*(t/=d)*t*((s+1)*t - s) + b;
		},
		easeout: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158;
			return c*((t=t/d-1)*t*((s+1)*t + s) + 1) + b;
		},
		easeinout: function(t,b,c,d,s){
			if (s == undefined) s = 1.70158; 
			if ((t/=d/2) < 1) return c/2*(t*t*(((s*=(1.525))+1)*t - s)) + b;
			return c/2*((t-=2)*t*(((s*=(1.525))+1)*t + s) + 2) + b;
		}
	},
	bounce: {
		easein: function(t,b,c,d){
			return c - tween.bounce.easeout(d-t, 0, c, d) + b;
		},
		easeout: function(t,b,c,d){
			if ((t/=d) < (1/2.75)) {
				return c*(7.5625*t*t) + b;
			} else if (t < (2/2.75)) {
				return c*(7.5625*(t-=(1.5/2.75))*t + .75) + b;
			} else if (t < (2.5/2.75)) {
				return c*(7.5625*(t-=(2.25/2.75))*t + .9375) + b;
			} else {
				return c*(7.5625*(t-=(2.625/2.75))*t + .984375) + b;
			}
		},
		easeinout: function(t,b,c,d){
			if (t < d/2) return tween.bounce.easein(t*2, 0, c, d) * .5 + b;
			else return tween.bounce.easeout(t*2-d, 0, c, d) * .5 + c*.5 + b;
		}
	}
}






function init()
{
var slidearea = document.getelementbyid("slidearea");
var piclist = slidearea.getelementsbytagname("li");
var btnframe = document.getelementbyid("slidebtn");
var btnarr = [];
var b=0,c=0,d=10,t=0;
var currentindex =0;
var moveend = true;
var index = 0;
var isover=false;
for(var i =0; i<piclist.length;i++)
{
	(btnarr[i]=btnframe.appendchild(document.createelement("span")));//.innerhtml = i+1;
	btnarr[i].name = i;
	btnarr[i].onclick = function(){move(this.name)};
	btnarr[i].onmouseover = function(){isover = true;};
	btnarr[i].onmouseout = function(){isover = false;};
	if(btnarr.length == piclist.length)
	{
	    btnarr[0].classname = "current";
		slidearea.onmouseover = function(){isover = true;};
		slidearea.onmouseout = function(){isover = false;};
	}
}
function move(n)
{
	index = n;
	if(moveend)
	{
		for(var i=0; i<btnarr.length;i++)
	    {
		     btnarr[i].classname = i==btnarr[n].name?"current":"";
	    }
	    if(currentindex+1==n)
	    {
		     c = -580;
	    }
	    else if(currentindex-1==n)
	    {
		     c = 580;
	    }
	    else
	    {
		     c = -580 * (n-currentindex);
	    }
	    run();
	    currentindex = n;
	}
	
}
function run(){
    slidearea.style.left = math.ceil(tween.elastic.easeinout(t,b,c,d)) + "px";
    if(t<d)
	{ 
	    t++; 
	    timer=settimeout(run, 10); 
		moveend = false;
	}
	else
	{
		//alert("运动完成");
		cleartimeout(timer);
		b+=c;
		t=0;
		moveend = true;
	}
}
function starttimer()
{
	if(!isover)
	{
		move(index);
	    if(index<piclist.length-1)
	    {
		    index++;
		
	    }
	    else
	    {
	        index = 0;
		
	    }
	}
	settimer=settimeout(starttimer,3000);
}
starttimer();	
}


/*news tab*/

$(function(){
    function tabs(tabtit,on,tabcon){
	$(tabcon).each(function(){
	  $(this).children().eq(0).show();
	  });
	$(tabtit).each(function(){
	  $(this).children().eq(0).addclass(on);
	  });
     $(tabtit).children().hover(function(){
        $(this).addclass(on).siblings().removeclass(on);
         var index = $(tabtit).children().index(this);
         $(tabcon).children().eq(index).show().siblings().hide();
    });
     }
  tabs(".tab-hd","active",".tab-bd");
   });