var timer;
function rgclick( gid )
{
  document.forms["frmgebied"].elements["g"].value = gid
  document.forms["frmgebied"].submit();
}
function navHelp( str )
{
   var anchor = document.getElementById('maincontent');
   var coords = findPos(anchor);
   var left   = coords[0];
   var div = document.getElementById('navhelpmarker');
   str = '<p>' + str + '</p>';
   left += 4;
   div.innerHTML = str;
   div.style.opacity = 1;
   div.style.filter = 'alpha(opacity=100)';
   div.style.left = left + 'px';
   div.style.display = 'block';
   //var top    = div.style.top;
//         var shadow = document.getElementById('navhelpshadow');
//         shadow.innerHTML = str;
//         shadow.style.left = (left+4) + 'px';
//         shadow.style.display = 'block';
   clearTimeout( timer );
   timer = setTimeout( 'fadeElement("navhelpmarker")', 3000 );
}
function fadeElement( elementId )
{
   var element = document.getElementById( elementId );
   if( element.style.opacity != undefined )
   {
     var opacity = element.style.opacity;
     //alert( "Opacity is " + opacity );
     if( opacity == 0 ) opacity = 1; /* was not set */
     opacity -= 0.05;
     element.style.opacity = opacity;
     element.style.filter = 'alpha(opacity=' + (opacity*100) + ')';
     if( opacity > 0 )
     {
        timer = setTimeout( 'fadeElement("'+elementId+'")', 40 );
     }
     else
     {
        element.style.display = 'none';
     }
   }
   else
   {
      //alert( "No opacity" );
     element.style.display = 'none';
   }
}