String.prototype.trim = function(){
	return this.replace(/(^\s*)|(\s*$)/g,"");
}
String.prototype.ltrim = function(){
	return this.replace(/(^\s*)/g,"");
}
String.prototype.rtrim = function(){
	return this.replace(/(\s$)/g,"");
}

//多栏内容 显示隐藏代码
function showDiv(obj,num,len)
{
 for(var id = 1;id<=len;id++)
 {
  var ss=obj+id;
  var snav =obj+"nav"+id;
  if(id==num){
	try{document.getElementById(ss).style.display="block"}catch(e){};
	try{document.getElementById(snav).className="active"}catch(e){};
  }else{
	try{document.getElementById(ss).style.display="none"}catch(e){};
	try{document.getElementById(snav).className=""}catch(e){};
  }
 }
}

//更改更多
function showMore(id,url){
	document.getElementById(id+"More").href=url;
}

//文章页面 文字缩放代码
function zoomFont(size){
var fonts = document.getElementById("fontzoom").getElementsByTagName("font");
var ps = document.getElementById("fontzoom").getElementsByTagName("p");
var divs=document.getElementById("fontzoom").getElementsByTagName("div");
var spans= document.getElementById("fontzoom").getElementsByTagName("span");

for(var i=0;i<fonts.length;i++){
    fonts[i].removeAttribute("size");
}
for(var i=0;i<spans.length;i++){
   spans[i].style.fontSize="";
   spans[i].style.fontFamily="";
}
for(var i=0;i<ps.length;i++){
    ps[i].style.fontSize="";
}
for(var i=0;i<divs.length;i++){
    divs[i].style.fontSize="";
}
document.getElementById('fontzoom').style.fontSize=size+'px';
document.getElementById('fontzoom').style.lineHeight=(size*2)+'px';

}
//左右不间断滚动图片
function scrollpic(){
	var speed3=25//速度数值越大速度越慢
	var demo1 = document.getElementById("demo");
	var demo1 = document.getElementById("demo1");
	var demo2 = document.getElementById("demo2");
	demo2.innerHTML=demo1.innerHTML
	var MyMar=setInterval(Marquee,speed3)
	demo.onmouseover=function() {clearInterval(MyMar)}
	demo.onmouseout=function() {MyMar=setInterval(Marquee,speed3)}
}
function Marquee(){
	var demo1 = document.getElementById("demo");
	var demo1 = document.getElementById("demo1");
	var demo2 = document.getElementById("demo2");
	//alert(demo2.offsetWidth+"--------"+demo.scrollLeft+"=========="+demo1.offsetWidth);
	if(demo2.offsetWidth-demo.scrollLeft<=0)
	demo.scrollLeft-=demo1.offsetWidth
	else{
		demo.scrollLeft++
	}
}