function toggleList( list )
{

	var children = list.parentNode;
	var ul = children.getElementsByTagName( "ul" )[ 0 ];
	displayValue = getElementComputedStyle( ul, "display" );

	if ( displayValue != "none" )
		ul.style.display = "none";
	else
		ul.style.display = "block";
}

// заимствованная функция
function getElementComputedStyle(elem, prop) 
{ 
  if (typeof elem!="object") elem = document.getElementById(elem); 
  
  // external stylesheet for Mozilla, Opera 7+ and Safari 1.3+ 
  if (document.defaultView && document.defaultView.getComputedStyle) 
  { 
    if (prop.match(/[A-Z]/)) prop = prop.replace(/([A-Z])/g, "-$1").toLowerCase(); 
    return document.defaultView.getComputedStyle(elem, "").getPropertyValue(prop); 
  } 
  
  // external stylesheet for Explorer and Opera 9 
  if (elem.currentStyle) 
  { 
    var i; 
    while ((i=prop.indexOf("-"))!=-1) prop = prop.substr(0, i) + prop.substr(i+1,1).toUpperCase() + prop.substr(i+2); 
    return elem.currentStyle[prop]; 
  } 
  
  return "";
 }
// end