function bookmarkit() {
   var aUrls = document.URL.split("/");
    var vDomainName = "http://" + aUrls[2] + "/";
    var description = document.title;
     try
    {
        window.external.addFavorite(vDomainName, description);
    }
    catch(e)
    {
         try
        {
            window.sidebar.addPanel(description, vDomainName, "");
        }
        catch (e)
        {
            try
            {
                 window.external.addFavorite(vDomainName, description);
            }
            catch(e)
            {
                alert("加入收藏失败，请使用Ctrl+D进行添加");
            }
        }

    }
	   }
function checkForm()
	{
		if(document.getElementById("title").value=="")
{
	alert("主题不能为空.");
	return false;
}
if(document.getElementById("t_type").value=="")
{
	alert("类型不能为空。");
	return false;
}
if(document.getElementById("info").value==""||document.getElementById("info").value==null)
{
	alert("反馈信息不能为空");
	return false;
}
	}
	function change()
    {
        var year=parseInt(form1.birthyear.value);
        var month=parseInt(form1.birthmonth.value);
        var leng=form1.birthday.options.length;
        if(month==1 || month==3 || month==5 || month==7 || month==8 || month==10 || month==12 )
        {
            if(leng<31)
            {
                for( i=leng+1;i<32;i++)
                {
                    form1.birthday.options.add(new Option(i,i));
                }
            }
            return ;
        }
        if(month==4||month==6|| month==9|| month==11)
        {
            if(leng<30)
            {
             for( i=leng+1;i<31;i++)
                {
                    form1.birthday.options.add(new Option(i,i));
                }
            }else
            {
                form1.birthday.options.length=30;
            }
            return ;
        }
        if(year%4==0&&year%100!=0)
        {
            if(leng<29)
            {
             for( i=leng+1;i<30;i++)
                {
                    form1.birthday.options.add(new Option(i,i));
                }
            }else
            {
                form1.birthday.options.length=29;
            }
            return ;
        }
        else if(year%400==0)
        {
             if(leng<29)
            {
             for( i=leng+1;i<30;i++)
                {
                    form1.birthday.options.add(new Option(i,i));
                }
            }else
            {
                form1.birthday.options.length=29;
            }
            return ;
        }
        else
        {
            form1.birthday.options.length=28;
        }
	}
function checkNum(name)
{
	obj=document.getElementById(name);
	obj.value=obj.value.replace(/[^\d]/g,'');
	if(obj.value!=parseInt(obj.value)+"")
	{
		obj.value=1;	
	}	
}
function checkorder()
{
	return true;
}
function trim(s)
{
	return s.replace(/(^\s*)|(\s*$)/g, "");
}