function validate_auth()
{
document.getElementById('l_email').style.borderColor="#7F9DB9";
document.getElementById('l_password').style.borderColor="#7F9DB9";
var reg= new RegExp("^[0-9a-z_]+@[0-9a-z_^\.]+\.[a-z]{2,6}$", 'i')
if (!reg.test(document.getElementById('l_email').value)) 
	{
	document.getElementById('l_email').style.borderColor="red";
	alert('Неправильный e-mail!');
	return false;
	}
if (document.getElementById('l_password').value=='')
	{
	document.getElementById('l_password').style.borderColor="red";
	alert('Вы не задали пароль!');
	return false;
	}
}




function close_obj(obj) {
if (obj) document.getElementById(obj).style.display = "none";
}

function close_all() {
close_obj('ad_flat');
close_obj('ad_room');
close_obj('ad_house');
close_obj('ad_warehouse');
close_obj('ad_office');
close_obj('ad_land');
close_obj('ad_new_building');
if (document.getElementById('tbl_filter')) document.getElementById('tbl_filter').style.visibility="visible";
}

function show_obj(obj,p_left,p_top) {
close_all()
document.getElementById(obj).style.display = "";
if (p_left) document.getElementById(obj).style.top = p_top;
if (p_top) document.getElementById(obj).style.left = p_left;

if (document.getElementById('tbl_filter')) document.getElementById('tbl_filter').style.visibility="hidden";
}

function check_checkbox(the_form)
  {
  var elts      = (typeof(document.forms[the_form].elements['selected_db[]']) != 'undefined')
                  ? document.forms[the_form].elements['selected_db[]']
                  : (typeof(document.forms[the_form].elements['selected_tbl[]']) != 'undefined')
          ? document.forms[the_form].elements['selected_tbl[]']
          : document.forms[the_form].elements['selected_fld[]'];
   var elts_cnt  = (typeof(elts.length) != 'undefined')
                  ? elts.length
                  : 0;
  var check=0; 

	if (elts_cnt) {
        for (var i = 0; i < elts_cnt; i++) {
            if (elts[i].checked) check=1;
        } // end for
    }   
 if (check==0) return '1'; else return '0';
}