//用户登陆

$(document).ready(function() {

   
        var url = document.location.href;
        if (url.indexOf('8080') > 1) {
            $("#top a").each(
        function() {
            var href = this.href.replace('chem365.net', 'chem365.net:8080');
            $(this).attr("href", href);
        }
    );
        }
   
});
 String.prototype.trim   =   function()   
  {   
          // 用正则表达式将前后空格   
          // 用空字符串替代。   
          return   this.replace(/(^\s*)|(\s*$)/g,   "");   
  }
function g(o){return document.getElementById(o);}


function HoverLi(n){
//如果有N个标签,就将i<=N;
for(var i=1;i<=6;i++){g('tb_'+i).className='normaltab';g('tbc_0'+i).className='undis';}g('tbc_0'+n).className='dis';g('tb_'+n).className='hovertab';
}
//如果要做成点击后再转到请将<li>中的onmouseover 改成 onclick;
//]]>
function cl(n,hrd)
{
   var hr="/web/serch/";
    var tb="chem_news";
    if(n==1)
    {tb="chem_news";}
    if(n==2)
    {tb="chem_news";}
    if(n==3)
    {tb="chem_news";}
    if(n==4)
    {tb="jckxx_news";}
    if(n==5)
    {tb="chem_news";}
    if(n==6)
    {tb="jdfx_news";}
    if(g('key'+n).value=="")
    {
         hrd.href=hr+tb+"/all/";
    }
    else
    {
        var key=g('key'+n).value;
         key= key.replace(/(^\s*)|(\s*$)/g,   ""); 
        hrd.href=hr+tb+"/"+key+"/";
        return true;
    }
}

function CheckLoginForm()
{
    var u=document.getElementById("UserName");
    var p=document.getElementById("Password");

    if(u.value=='')
     {
         alert('请填写用户名！');
        u.focus();
         return false;
     }
     else if(p.value=='')
     {
         alert('请填写密码！');
         p.focus();
         return false;
     }
     return true;
}