// JavaScript Document

function init_nav() {
   for(i = 0; i < document.getElementsByTagName('ul').length; 
       i++) {
      if(document.getElementsByTagName('ul')[i].className == 
      "opened") {
         id = 
         document.getElementsByTagName('ul')[i].parentNode.id;
         toggle(id, false);
      }
   }
   if(window.name.length > 0)       
      
	  load_nav();
}

function toggle(id, save) {
      //if(save == true) save_nav();

   ul = "ul_" + id;
   img = "img_" + id;
   ul_element = document.getElementById(ul);
   img_element = document.getElementById(img);
   if(ul_element) {
       if(ul_element.className == 'closed') {
		// Zweig wird geöffnet also alles andere ausserhalb schliessen!
		// var blnA == new Array (10);
		if (ul_element.parentNode.parentNode.id != "root") {
			// 2.Unterebene 
			//alert(ul_element.parentNode.parentNode.id);
			strA = ul_element.parentNode.parentNode.id;
			strB = ul_element.id
			//alert(strB);
			// Alles schliessen lassen
		   for(i = 0; i < document.getElementsByTagName('ul').length; i++) 
		   		{
      			if(document.getElementsByTagName('ul')[i].className == "opened") 
					{id = document.getElementsByTagName('ul')[i].id;
         			//alert("open = "+id);
					//toggle(id, true);
					if (id != "root") {
						document.getElementsByTagName('ul')[i].className = "closed";
          				//alert("open = "+id.slice(3));
						//document.getElementsByID("img_"+ id).src = "closed.gif";
						document.getElementById("img_" + id.slice(3)).src = "closed.gif";

						}
      				}
   				}
			  	//document.getElementById(ul).className = "opened";
          		//document.getElementById(ul).src = "opened.gif";
			  	document.getElementById(strA).className = "opened";
         		//alert("--- " + strA)
		 		document.getElementById("img_" + strA.slice(3)).src = "opened.gif";

			//toggle(strA, true);
			//toggle(strB, true);


		}
		else {
				for(i = 0; i < document.getElementsByTagName('ul').length; i++) 
		   			{
      				if(document.getElementsByTagName('ul')[i].className == "opened") 
						{id = document.getElementsByTagName('ul')[i].id;
         				//alert("open = "+id);
						//toggle(id, true);
						if (id != "root") {
							document.getElementsByTagName('ul')[i].className = "closed";
 							document.getElementById("img_" + id.slice(3)).src = "closed.gif";
							//document.getElementsByTagName('ul')[i].src = "closed.gif";
							
							}
      					}
   					}
//			  		document.getElementById(strA).className = "opened";
//          			document.getElementById(strA).src = "opened.gif";
//			  		document.getElementById(strB).className = "opened";
//          			document.getElementById(strB).src = "opened.gif";
		
		}
		
		
		  ul_element.className = "opened";
          img_element.src = "opened.gif";
       } 
       else {
          ul_element.className = "closed";
          img_element.src = "closed.gif";
       }
   }
   //alert(ul_element.parentNode.parentNode.id);

//   if(save == true) save_nav();
}

function save_nav() {
   var save = "";
   for(var i = 0; i < document.getElementsByTagName('ul').length;
   i++) {
      if((document.getElementsByTagName('ul')[i].className == 
      "opened" || 
      document.getElementsByTagName('ul')[i].className == 
      "closed") && document.getElementsByTagName('ul')[i].id != 
      'root') 
         save = save + document.getElementsByTagName('ul')[i].id 
         + "=" + document.getElementsByTagName('ul')[i].className 
         + ",";
   }
   if(save.lastIndexOf(",") > 0) 
      save = save.substring(0, save.lastIndexOf(","));
   window.name = save;
}

function load_nav() {
   var items = window.name.split(",");
   if(items.length > 0) {
      for(var i = 0; i < items.length; i++) {        
         id_value = items[i].split("=");         
         if(id_value.length == 2) {
            id = id_value[0];  
            value = id_value[1];
            document.getElementById(id).className = value;
            img = "img_" + id.substring(3, id.length);
            img_element = document.getElementById(img);
            if(value == "closed")
               img_element.src = "closed.gif";  
            else
               img_element.src = "opened.gif";
         }
      }
   }
}