var current_page="L1";
var isie = (navigator.appName == "Microsoft Internet Explorer")?true:false;
function show_sub(top_elem, evt)
{
     var has_drops = (top_elem.childNodes.length>1) ? true : false;

     if(has_drops)
     {
          var sub_id = top_elem.id + "S";
          var sub = document.getElementById(sub_id);
          sub.style.display="block";
          if(isie)
          {
               var pos = findPos(top_elem);
               sub.style.left=pos[0];
               sub.style.top=(pos[1]+top_elem.offsetHeight)-5;
          }
     }

     nav_stat(top_elem, evt);
}

function findPos(obj) 
{
	var curleft = curtop = 0;
	
	if (obj.offsetParent) 
	{
		do 
		{
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		} while (obj = obj.offsetParent);
	}
	return [curleft,curtop];
}
var close_to;
function close_sub(top_elem, evt)
{
	//alert("to started");
	//close_to = window.setTimeout(function()
	//{
     var has_drops = (top_elem.childNodes.length>1) ? true : false;
     /* */
     if(has_drops)
     {
          var sub_id = top_elem.id + "S";
          var sub = document.getElementById(sub_id);
          sub.style.display="none";
          sub.style.zIndex="1";
          top_elem.style.zIndex="5";
     }
     
   //}, 1500);
   nav_stat(top_elem, evt);
}
function kill_close_to()
{
	window.clearTimeout(close_to);
}
function nav_stat(elem, evt)
{
     var stat_txt = '';
     if(evt.type!='mouseout')
     {
          stat_txt = elem.title;
     }
     window.status=stat_txt;
}
function nav_to(url, elem_on_id)
{
    var cur_elem = document.getElementById(current_page);
    var new_elem = document.getElementById(elem_on_id);
    if(current_page != elem_on_id)
    {
        cur_elem.style.cursor = "";
        cur_elem.style.backgroundColor = "";
        cur_elem.style.color = "";
        
        new_elem.style.cursor = "text";
        new_elem.style.backgroundColor = "#336666";
        new_elem.style.color = "gold";
        current_page = elem_on_id;
    }
    top.elems.mainwin.src = url;
}
/* navigation funtions END*/