// JavaScript Document
var userAgent = navigator.userAgent.toLowerCase();
var is_opera = userAgent.indexOf('opera') != -1 && opera.version();
var is_ie = (userAgent.indexOf('msie') != -1 && !is_opera) && userAgent.substr(userAgent.indexOf('msie') + 5, 3);
function showtopicinfo(forumid, index) {
   var no_pic_path = 'templates/' + templatepath +'/images/NoPhoto.jpg';
   for(var i in reco_topic) {
       if (reco_topic[i].fid == forumid || index == i) { 
            return '<a href="'+ (aspxrewrite == 1 ? 'showtopic-'+reco_topic[i].tid+ '.aspx':'showtopic.aspx?topicid='+reco_topic[i].tid) +'"><img onload="imgautosize(this, 90,120);" src="' + (reco_topic[i].img.indexOf('http')>=0 ? reco_topic[i].img : 'upload/' + reco_topic[i].img) + '" alt="' + reco_topic[i].title + '" onerror="this.onerror=null;this.src=\'' + no_pic_path + '\';" align="left"/></a>'+ reco_topic[i].title+'<a href="'+ (aspxrewrite == 1 ? 'showtopic-'+reco_topic[i].tid+ '.aspx':'showtopic.aspx?topicid='+reco_topic[i].tid) +'">&nbsp;&nbsp;详细&gt;&gt;</a>';
       }
   }
   //return '<img width="237" height="130" src="'+no_pic_path+'" alt="暂无推荐"/><h4>暂无推荐</h4>';
   return '';
}
/*
方法名称: imgautosize 
方法说明: 按高/宽(宽/高)比例显示图片方法
参数说明:
          imgobj : img 元素对象
          maxwidth 设置图片宽度界限
          maxheight 设置图片高度界限
*/
function imgautosize(imgobj, maxwidth, maxheight)
{
    var heightwidthrate = imgobj.offsetHeight / imgobj.offsetWidth;//设置高宽比
    var widthheightrate = imgobj.offsetWidth / imgobj.offsetHeight;//设置宽高比
   
    if(is_ie && imgobj.readyState != 'complete') {  //确保图片完全加载
        //alert(imgobj.offsetHeight+ ' '+imgobj.fileSize);
        return false;
    }
        
    if(imgobj.offsetHeight > maxheight){
        imgobj.height = maxheight;
        imgobj.width = maxheight * widthheightrate;
    }
    if(imgobj.offsetWidth > maxwidth){
        imgobj.width = maxwidth;
        imgobj.height = maxwidth * heightwidthrate;
    }
}


function chanagepanel(panel)
{
	var obj;
	var obj2;
	if(panel==1)
	{
	obj=document.getElementById("tabpanel_1");
	obj.style.display='block';
	obj2=document.getElementById("tabpanel_2");
	obj2.style.display='none';
	}
	else
	{
	obj=document.getElementById("tabpanel_2");
	obj.style.display='block';
	obj2=document.getElementById("tabpanel_1");
	obj2.style.display='none';
	}
}