js 自动网页高度+样式表四季自动切换

[javascript]代码库

var g=function(o){
	return document.getElementById(o)
}
,
w=g("wrap"),f=g("footer"),b=document.body,
host=window.location.host.split("."),n=host[0],
s={
	"1":"winter","2":"winter","3":"spring","4":"spring","5":"spring","6":"summer","7":"summer","8":"summer","9":"autumn","10":"autumn","11":"autumn","12":"winter"
}
[(new Date(nowtime*1000)).getMonth()+1],
h=document.documentElement.clientHeight||b.clientHeight,
a=function(){},
set=function(){
	if(h>=690){
		w.style.paddingTop=Math.ceil((h-570)/2)+"px";
		f.className="footer pa"
	
	}
	else{
		w.style.paddingTop="60px";
		f.className="footer"
	
	};
}
,
int=function(){
	if(host.length==4){
		if(n=="app"||n=="game"){
			n=host[1]
		}
		else{
			n=host[0]+"."+host[1]
		}
	};
	g("return").href="http://"+n+".qq.com/?ADTAG=IED.InnerCop.gameWeb.errPage";
	g("i404").src="http://ossweb-img.qq.com/images/game/404/season-"+s+".jpg";
	b.className=s;
	set();
	b.style.display="block";
	a("resize",function(){
		h=document.documentElement.clientHeight||b.clientHeight;
		set();
	});
};
if(window.attachEvent){
	a=function(e,f){
		window.attachEvent("on"+e,f)
	}
}
else{
	a=function(e,f){
		window.addEventListener(e,f,false)
	}
};
if(typeof(pgvMain)=="function"){
	pgvMain()
};
int();