var myfocus={
	$:function(id){return document.getelementbyid(id);},
	$$:function(tag,obj){return (typeof obj=='object'?obj:this.$(obj)).getelementsbytagname(tag);},
	$li:function(obj,n){return this.$$('li',this.$$('ul',obj)[n])},
	linear:function(t,b,c,d){return c*t/d + b;},
	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){return ((t/=d/2) < 1)?(c/2*t*t*t*t + b):(-c/2*((t-=2)*t*t*t - 2) + b);},
	style:function(obj,style){return (+[1,])?window.getcomputedstyle(obj,null)[style]:obj.currentstyle[style];},//getstyle简化版
	opa:function(obj,v){//取得或设置对象透明度,默认100
		if(v!=undefined) {v=v>100?100:(v<0?0:v); obj.style.filter = "alpha(opacity=" + v + ")"; obj.style.opacity = (v / 100);}
		else return (!+[1,])?((obj.filters.alpha)?obj.filters.alpha.opacity:100):((obj.style.opacity)?obj.style.opacity*100:100);
	},
	animate:function(obj,prop,val,spd,type,fn){
		var opa=prop=='opacity'?true:false;
		if(opa&&obj.style.display=='none'){obj.style.display='';this.opa(obj,0);}
		var t=0,b=opa?this.opa(obj):parseint(this.style(obj,prop)),c=val-b,d=spd||50,st=type||'easeout',m=c>0?'ceil':'floor';
		if(obj[prop+'timer']) clearinterval(obj[prop+'timer']);
		obj[prop+'timer']=setinterval(function(){
			if(opa&&t<d){myfocus.opa(obj,math[m](myfocus[st](++t,b,c,d)));}
			else if(!opa&&t<d){obj.style[prop]=math[m](myfocus[st](++t,b,c,d))+'px';}
			else {if(opa&&val==0){obj.style.display='none'}clearinterval(obj[prop+'timer']);fn&&fn.call(obj);}
		},10);return this;
	},
	fadein:function(obj,speed,fn){this.animate(obj,'opacity',100,speed==undefined?20:speed,'linear',fn);return this;},
	fadeout:function(obj,speed,fn){this.animate(obj,'opacity',0,speed==undefined?20:speed,'linear',fn);return this;},
	slide:function(obj,params,speed,easing,fn){for(var p in params) this.animate(obj,p,params[p],speed,easing,fn);return this;},
	stop:function(obj){//停止所有运动函数
		var animate=['left','right','top','bottom','width','height','opacity'];
		for(var i=0;i<animate.length;i++) if(obj[animate[i]+'timer']) clearinterval(obj[animate[i]+'timer']);
		return this;
	},
	initcss:function(p){
		var css=[],ostyle = document.createelement('style');ostyle.type='text/css';
		if(p.width){css.push('.'+p.style+' *{margin:0;padding:0;border:0;list-style:none;}.'+p.style+'{position:relative;width:'+p.width+'px;height:'+p.height+'px;overflow:hidden;font:12px/1.5 verdana,geneva,sans-serif;background:#fff;}.'+p.style+' .loading{position:absolute;z-index:9999;width:100%;height:100%;color:#666;text-align:center;padding-top:'+0.3*p.height+'px;background:#fff url(http://nethd.zhongsou.com/wtimg/i_41956/28236-loading.gif) center '+0.4*p.height+'px no-repeat;}.'+p.style+' .pic,.'+p.style+' .pic *{width:'+p.width+'px;height:'+p.height+'px;}.'+p.style+' .txt li,.'+p.style+' .txt li span,.'+p.style+' .txt-bg{width:'+p.width+'px;height:'+p.txtheight+'px;line-height:'+p.txtheight+'px;overflow:hidden;}')}
		if(ostyle.stylesheet){ostyle.stylesheet.csstext=css.join('');} else {ostyle.innerhtml=css.join('');}
		var ohead = this.$$('head',document)[0];ohead.insertbefore(ostyle,ohead.firstchild);
	},
	setting:function(par){
		if(window.attachevent){(function(){try{myfocus.$(par.id).classname=par.style;myfocus.initcss(par);}catch(e){settimeout(arguments.callee,0);}})();window.attachevent('onload',function(){myfocus[par.style](par)});}
　　		else{document.addeventlistener("domcontentloaded",function(){myfocus.$(par.id).classname=par.style;myfocus.initcss(par);},false);window.addeventlistener('load',function(){myfocus[par.style](par)},false);}
	},
	addlist:function(obj,cla){//生成hmtl,cla为生成列表的class,其中封装有:cla='txt'(生成alt文字),cla='num'(生成按钮数字),cla='thumb'(生成小图)
		var s=[],n=this.$li(obj,0).length,num=cla.length;
		for(var j=0;j<num;j++){
			s.push('<ul class='+cla[j]+'>');
			for(var i=0;i<n;i++){s.push('<li>'+(cla[j]=='num'?('<a>'+(i+1)+'</a>'):(cla[j]=='txt'?this.$li(obj,0)[i].innerhtml.replace(/\>(.|\n|\r)*?(\<\/a\>)/i,'>'+(this.$$('img',obj)[i]?this.$$('img',obj)[i].alt:'')+'</a>'):(cla[j]=='thumb'?'<img src='+(this.$$('img',obj)[i].getattribute("thumb")||this.$$('img',obj)[i].src)+' />':'')))+'<span></span></li>')};
			s.push('</ul>');
		}; obj.innerhtml+=s.join('');
	},
	switchmf:function(fn1,fn2,auto){
		return "box.removechild(this.$$('div',box)[0]);var run=function(idx){("+fn1+")();if (index == n - 1) index = -1;var next = idx != undefined ? idx: index + 1;("+fn2+")();index=next;};run(index);if("+auto+"!==false) var auto=setinterval(function(){run()},t);box.onmouseover=function(){if(auto) clearinterval(auto);};box.onmouseout=function(){if(auto) auto=setinterval(function(){run()},t);}"
	},
	bind:function(arrstr,type,delay){
		return "for (var j=0;j<n;j++){"+arrstr+"[j].index=j;if("+type+"=='click'){"+arrstr+"[j].onmouseover=function(){if(this.classname!='current') this.classname='hover'};"+arrstr+"[j].onmouseout=function(){if(this.classname=='hover') this.classname=''};"+arrstr+"[j].onclick=function(){if(this.index!=index) run(this.index)};}else if("+type+"=='mouseover'){"+arrstr+"[j].onmouseover=function(){var self=this;if("+delay+"==0){if(!self.classname) run(self.index)}else "+arrstr+".d=settimeout(function(){if(!self.classname) run(self.index)},"+(delay==undefined?100:delay)+")};"+arrstr+"[j].onmouseout=function(){cleartimeout("+arrstr+".d)};}else{alert('myfocus 不支持这样的事件 \"'+"+type+"+'\"');break;}}"
	},
	extend:function(fnobj){for(var p in fnobj) this[p]=fnobj[p];}
}