function handle(id) {
	collapseAll();
	expand(id);
	var heightHeader;
	var heightFooter;
	heightHeader = document.getElementById('header').offsetHeight;
	heightFooter = document.getElementById('footer').offsetHeight;
	if(isNaN(heightHeader) == false && isNaN(heightFooter) == false) {
		calcHeight(heightHeader,heightFooter);	
 	}
}
function collapseAll() {
  expandOrCollapse('none');
}
function expandAll() {
  expandOrCollapse('block');
}
function expandOrCollapse(newStyle) {
   var tmptxt;
   var x;
    var knoten=document.getElementById('hauptsubmenu').firstChild;
	while (knoten!=null) {
         for(x=0;x<knoten.childNodes.length;x++) {
         processChildNodes(knoten.childNodes[x],newStyle);
         if (knoten.childNodes[x].nodeName.toLowerCase()=='table') { 	   if (knoten.childNodes[x].getAttributeNode('id').nodeValue!='')          knoten.childNodes[x].style.display=newStyle;}
       }
     knoten=knoten.nextSibling;
   } //...while
}
function processChildNodes(e,newStyle) {
  var x;
  for(x=0;x<e.childNodes.length;x++) {
	    processChildNodes(e.childNodes[x],newStyle);
	    if (e.nodeName.toLowerCase()=='table') {
   		if (e.getAttributeNode('id')) {
  			if (e.getAttributeNode('id').nodeValue!='') 
 				e.style.display=newStyle;
				}
      		}
  	}
}
function expand(id) {
 if (id=='') return;
  var e=document.getElementById(id);
  if (!e) return;
  //eltern des zu expandierenden eintrags ebenfalls expandieren, danit der eigentlich zu expandierende eintrag überhaupt sichtbar wird
  var eltern=e.parentNode;
  while(eltern) {
   if (eltern.nodeName.toLowerCase()=='table') {
      if (eltern.getAttributeNode('id')) {
       if (eltern.getAttributeNode('id').nodeValue!='') 
           expandSingle(eltern.id);}
      }
    eltern=eltern.parentNode;
  }
  expandSingle(id);
}
function expandSingle(id) {
 if (id=='') return;
  var e=document.getElementById(id);
  e.style.display='block';
}