function setCookie(name,value)
{
    var Days = 30;
    var exp  = new Date();
        exp.setTime(exp.getTime() + Days*24*60*60*1000);
       document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
}
function getCookie(name)
{
    var arr,reg=new RegExp("(^| )"+name+"=([^;]*)(;|$)");
        if(arr=document.cookie.match(reg)) return unescape(arr[2]);
        else return null;
}
function $(element){
	return element = document.getElementById(element);
}

function Dtoggle(maxh){
	var d=$('modellist');
	var h=d.offsetHeight;
	function dmove(){
		h+=120; //设置层展开的速度
		if(h>=maxh){
			d.style.height=maxh;
			clearInterval(iIntervalId);
		}else{
			d.style.display='block';
			d.style.height=h+'px';
		}
	}
	iIntervalId=setInterval(dmove,5);
}
function Dtoggle2(){
	var d=$('modellist');
	var h=d.offsetHeight;
	var maxh=179;
	function dmove(){
		h-=120;//设置层收缩的速度
		if(h<=0){
			d.style.display='none';
			clearInterval(iIntervalId);
		}else{
			d.style.height=h+'px';
		}
	}
	iIntervalId=setInterval(dmove,5);
}

function xuse(){
	var d=$('modellist');
	var sb=$('toggle');
	if(getCookie("toggle")=='0'){	Dtoggle2();
		setCookie("toggle",'1');
		$('toggle').innerHTML="[+]点击打开机型列表";
		
	}else{Dtoggle(maxh);
		setCookie("toggle",'0');
		$('toggle').innerHTML="[-]点击关闭机型列表";
	
	}
}
window.onload=function(){
	if(getCookie("toggle")=='1'){
		$('toggle').innerHTML="Click here to Open";
		$('modellist').style.display="none";
	}
}