function togglesection(whichLayer,togglelink)
{
	  var elem, vis;
	  if( document.getElementById ) // this is the way the standards work
		elem = document.getElementById(whichLayer);
	  else if( document.all ) // this is the way old msie versions work
		  elem = document.all[whichLayer];
	  else if( document.layers ) // this is the way nn4 works
		elem = document.layers[whichLayer];
	  vis = elem.style;
	  // if the style.display value is blank we try to figure it out here
	  if(vis.display==''&&elem.offsetWidth!=undefined&&elem.offsetHeight!=undefined)
		vis.display = (elem.offsetWidth!=0&&elem.offsetHeight!=0)?'block':'none';
	  vis.display = (vis.display==''||vis.display=='block')?'none':'block';
	  if(togglelink.className =='sb-heading toggled')
		togglelink.className ='sb-heading untoggled';
	  else
		togglelink.className ='sb-heading toggled'; 
	  
}

function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      oldonload();
      func();
    }
  }
}