var focusImg = {
	isIE:!(navigator.userAgent.indexOf('MSIE')==-1),
	news:null,
	curNew:0,
	timer:null,
	init: function( pic , txt ){
		try{
		if(!pic) pic="user_images";
		//if(!txt) txt="o_PicTxt";
		txt = '';
		var div = document.getElementById(pic);
		if(!div) return;
		div.style.display = '';
		var nav = document.createElement("DIV");
		nav.className = "user_images_nav";
		var nodes;
		if(focusImg.isIE){
			nodes = this.childrenNodes(div.childNodes);
		}else{
			nodes = this.childrenNodes(div.childNodes);
		}
		focusImg.news=new Array(nodes.length);
		for(var i=nodes.length-1; i>=0; i--){
			var element = nodes[i];
			if(element.tagName=='A'){
				//alert(nodes.length+'----'+i+'----'+element.tagName);
				focusImg.news[i]= {};
				focusImg.news[i].Element= element;
				focusImg.news[i].Text= element.getAttribute("title");
				focusImg.news[i].Url= element.getAttribute("href");
				var n = document.createElement("span");
				n.innerHTML = "<a herf=\"javascript:;\" onclick=\"javascript:focusImg.curNew="+(i-1)+";focusImg.change('"+pic+"','"+txt+"');\">"+(i+1)+"</a>";
				if(i==focusImg.curNew) n.className = "Cur";
				nav.appendChild(n);
				focusImg.news[i].LinkElement = n;
			}
		}
		
		div.appendChild(nav);
		focusImg.curNew--;
		window.setTimeout("focusImg.change('"+pic+"','"+txt+"')",3000);
		}catch(e){throw '语法错误(init):'+ e ;}
	},
	childrenNodes: function(node){
		try{
		var c=new Array();
		for(var i=0;i<node.length;i++){
			if(node[i].nodeName.toLowerCase()=="a") c.push(node[i]);
		}
		return c;
		}catch(e){throw '语法错误(childrenNodes):'+ e ;}
	},
	change: function(pic ,txt ){
		try{
		var div=document.getElementById(pic);
		//var text=document.getElementById(txt);
		txt = '';
		if(!div) return;
		focusImg.curNew = focusImg.curNew + 1;
		if(focusImg.curNew>= focusImg.news.length) focusImg.curNew = 0;
		for(var i=0; i<focusImg.news.length; i++){
			if(i==focusImg.curNew){
				focusImg.news[i].Element.style.display = "block";
				focusImg.news[i].Element.style.visibility = "visible";
				focusImg.news[i].LinkElement.className = "Cur";
				//text.innerHTML="<a href=\""+news[i].Url+"\" title=\""+news[i].Text+"\" target=\"_blank\">"+news[i].Text+"</a>";
			}else{
				focusImg.news[i].Element.style.visibility = "hidden";
				focusImg.news[i].Element.style.display = "none";
				focusImg.news[i].LinkElement.className = "Normal";
			}
		}
		if(focusImg.timer)window.clearTimeout(focusImg.timer);
		focusImg.timer=window.setTimeout("focusImg.change('"+pic+"','"+txt+"')",5000); 
		}catch(e){throw '语法错误(change):'+ e ;}
	}
}