//Collapsable section function
function csToggle(csTextDiv, csImg, csImgsrc1, csImgsrc2, csHeaderDiv)
 {
   if (csTextDiv.style.display=="none")
   {
     csImg.src=csImgsrc1;
     csTextDiv.style.display="";
	 //csHeaderDiv.style.backgroundColor="#CCCCCC";
   }
   
   else 
   {   
     csImg.src=csImgsrc2;
     csTextDiv.style.display="none";
	 //csHeaderDiv.style.backgroundColor="#E5E5E5";
   }
 }

 //Collapsable section function specific
function csArrowToggle(csTextDiv, csImg)
 {
   if (csTextDiv.style.display=="none")
   {
     csImg.src =envn.image + "arrow_down.gif";
     csTextDiv.style.display="";
   }
   
   else 
   {   
     csImg.src= envn.image + "arrow.gif";
     csTextDiv.style.display="none";
   }
 }
 
 
 
 
 
 
 
 function doToggleLIST(x){
	var zDD=document.getElementById('LIST').getElementsByTagName('dd');
	var zDT=document.getElementById('LIST').getElementsByTagName('dt');	
		zDD[x].className=(zDD[x].className=='showDD')?'hideDD':'showDD';
		zDT[x].className=(zDT[x].className=='DTminus')?'DTplus':'DTminus';	
}
function ToggleLISTopen(){//we open all of them
	var zDD=document.getElementById('LIST').getElementsByTagName('dd');
	var zDT=document.getElementById('LIST').getElementsByTagName('dt');	
	for(var i=0;i<zDT.length;i++){
		zDD[i].className='showDD';
		zDT[i].className='DTminus';
	}
	return false;
}
function ToggleLISTclose(){//we close all of them	
	var zDD=document.getElementById('LIST').getElementsByTagName('dd');
	var zDT=document.getElementById('LIST').getElementsByTagName('dt');	
	for(var i=0;i<zDT.length;i++){
		zDD[i].className='hideDD';
		zDT[i].className='DTplus';
	}
	return false;	
}
function ToggleLIST(){
if (document.getElementById && document.getElementsByTagName){			
	var zDT=document.getElementById('LIST').getElementsByTagName('dt');
	var zDD=document.getElementById('LIST').getElementsByTagName('dd');
	var ToggleON = document.getElementById('ToggleON');
	var ToggleOFF = document.getElementById('ToggleOFF');	
	if (ToggleON && ToggleOFF){// Show All - Hide All "links"
		ToggleON.onclick = ToggleLISTopen;
		ToggleON.title = "Show all";
		ToggleON.href = "#";		
		ToggleOFF.onclick = ToggleLISTclose;	
		ToggleOFF.title = "Hide all";
		ToggleOFF.href = "#";		
	}
	for(var i=0;i<zDT.length;i++){
		var zContent = zDT[i].innerHTML;
		var zHref = "<a href='#' onclick=\"doToggleLIST("+i+");return false\" title='Show/hide the answer'>";
		zDT[i].innerHTML = zHref + zContent + "</a>";
		zDD[i].className='hideDD';
		zDT[i].className='DTplus';
		}
	}
}







///////////////////////////////////////////////////////////////////////

  var menu_active_class = "active";
  var menu_leaf_class = "leaf";
  var menu_open_class = "open";
  var menu_closed_class = "closed";
  
  //the default page that is displayed if URL ends in /
  var menu_default_page = "index.php";
  var menu_url;
  
  //main function
  //menu_id : id of the element containing the navigation
  function menu_main(menu_id) {
     var url = location.href;
     if (url.lastIndexOf("/") == (url.length-1)) {
       url = url+menu_default_page;
     }
     if (url.lastIndexOf("?") >= 0) {
       url = url.substring(0, url.lastIndexOf("?"));
     }
     if (url.lastIndexOf("#") >= 0) {
       url = url.substring(0, url.lastIndexOf("#"));
     }
     menu_url = url;
     
     var main = document.getElementById(menu_id);
     if (!main) alert("No element with id '"+ menu_id +"' found");
     menu_traverse(main);
  }
  
  /* Walks down the subtree and on the way back
     sets properties.
     returns bit set
             1: set = element is a node, unset = element is a leaf
             2: set = element contains the active node
             4: set = element is the active A node
  */
  function menu_traverse(element) {
    var props  = 0;
    
    // walk down
    for (var i=0; i<element.childNodes.length; i++) {
      var child = element.childNodes[i];
      props |= menu_traverse(child); // aggregate bits
    }
    
    // on the way back now
    switch (element.tagName) {
      case "UL":
        props |= 1;
        break;
        
      case "LI":
        var c1 = (props & 1) ? 
                   ((props & (2|4)) ? menu_open_class : menu_closed_class)
                 : menu_leaf_class; 
        element.className = element.className ? element.className+" "+c1 : c1;
        if (props & 4) {
          if (!(props & 2)) element.className += " "+menu_active_class;
          props |= 2;
          props &= 1 | 2; // reset bit 4
        }
        break;
        
      case "A":
        if (props & 2) break; // once is enough
        var href = element.getAttribute("href");
        if (menu_isSameUrl(menu_url, href)) props |= 4;
        break;
    }
    
    return props;
  }
  
  //matches two URIs when href is the last part of url
  //.. and . are correctly resolved
  function menu_isSameUrl(url, href) {
    var a = url.split(/[?\/]/i);
    var b = href.split(/[?\/]/i);
    var i = a.length - 1;
    var j = b.length - 1;
    while ((i >= 0) && (j >= 0)) {
      if (b[j] == "..") { j-=2; continue; }
      if (a[i] == "..") { i-=2; continue; }
      if ((b[j] == ".") || (b[j] == "")) { j--; continue; }
      if ((a[i] == ".") || (a[i] == "")) { i--; continue; }
      if (! (a[i] == b[j])) return false;
      i--;
      j--;
    }
    return true;
  }