var activeMenue = '';
var t;
var s;

function switchMenue(id,dummy)
{
  if(activeMenue)
  toggle(activeMenue,0);
  toggle(id,1);
  activeMenue = id;
}

function all_off()
{
	for(i=0;i<=20;i++)
	{
		toggle('nav'+i,0);
	}
}

function toggle(id, status)
{
	var flip;
	if (status==0)
	{
		flip="hidden";
		if (document.layers) {flip="hide"}
	}
	else
	{
		flip="visible";
		if (document.layers) {flip="show"}
	}

    if (document.getElementById) 
	{
        if(document.getElementById(id)) eval("document.getElementById(id).style.visibility = \"" + flip + "\""); 
    } 
	else 
	{
   	    if (document.layers) {
		
			if(document.layers[id]) document.layers[id].visibility = flip;
        } 
		else 
		{
           	if (document.all) 
			{
   	            if(document.all[id]) eval("document.all." + id + ".style.visibility = \"" + flip + "\"");
       	    }
        }
    }
}

function kill(mode, live)
{
	if(mode==1)
	{
	t=window.setTimeout('all_off()', live);
	}
	else
	{
	window.clearTimeout(t);
	}
}

function flip(img, source)
{
      	document.images[img].src = source;
}