function student_check(){				
	  var idencode=document.getElementById('idencode').value;
	if (check_idencode(idencode)){
	    alert(check_idencode(idencode));
		//add_student_input();
		}
	else
		{
      var url='add_student_form_shabl.php'+'?id='+idencode;
	  var param = 'id='+document.getElementById('idencode').value;
	  var loader1 = new
        net.ContentLoader(url,add_student_info_form,null,"post",param);	
		}
	return false;
    }

<table width="100%" border="0">
        <tr>
		<td width="80%">
	    <div id='student_info'>
	    Новости:			   
	    </div>
		</td>
		<td valign="top">
		<table class="menu">
		<tr class="menu_row">
		<td onclick="add_idencode_input()"onmouseover='podsvetka_td_on()' onmouseout='podsvetka_td_off()'>
		Добавить/редактировать свои данные
		</td>
		</tr>  
		</table>
		</td>
		</tr>
</table>