function dologin()
 {


		if ((document.frm.user_name.value==""))
	   {   alert("请您输入用户名！");
            document.frm.user_name.focus();
	    return ;
	   }

		 if (document.frm.user_password.value=="")
      {
        alert("密码不能为空");
	    document.frm.user_password.focus();
	   return ;
      }
	document.frm.submit();
 }

function goPage()

 {
 	
 	  if(document.goform.gopage.value>document.goform.pageTotalNum.value)
 	    {
 	    	alert("对不起，该页超过了最大页码！");
 	    	return;
 	    	
 	    }
    document.goform.pageNum.value=document.goform.gopage.value;
    document.goform.submit();
 }
 function goNext(pageNext)
 {
 	
 	  if(pageNext>document.goform.pageTotalNum.value)
 	    {
 	    	alert("对不起，该页超过了最大页码！");
 	    	return;
 	    	
 	    }
     if(pageNext<1)
 	    {
 	    	alert("对不起，该页超过了最小页码！");
 	    	return;
 	    	
 	    }
   
    document.goform.pageNum.value=pageNext;
    document.goform.submit();
 }
function doSearch()
 {


		if ((document.searchfrm.keyword.value==""))
	   {   alert("请您输入关键词！");
            document.searchfrm.keyword.focus();
	    return false;
	   }
    document.searchfrm.submit();
 }
 
 function info( information ){
 	 	alert(''+information+''); 	
 }