/*firefox*/ 
function __firefox(){ 
HTMLElement.prototype.__defineGetter__("runtimeStyle", __element_style); 
window.constructor.prototype.__defineGetter__("event", __window_event); 
Event.prototype.__defineGetter__("srcElement", __event_srcElement); 
} 
function __element_style(){ 
return this.style; 
} 
function __window_event(){ 
return __window_event_constructor(); 
} 
function __event_srcElement(){ 
return this.target; 
} 
function __window_event_constructor(){ 
if(document.all){ 
return window.event; 
} 
var _caller = __window_event_constructor.caller; 
while(_caller!=null){ 
var _argument = _caller.arguments[0]; 
if(_argument){ 
var _temp = _argument.constructor; 
if(_temp.toString().indexOf("Event")!=-1){ 
return _argument; 
} 
} 
_caller = _caller.caller; 
} 
return null; 
} 
if(window.addEventListener){ 
__firefox(); 
} 
/*end firefox*/ 


var current;
var t;
var num;
function timeaout()
{
  if(t)
  {
    clearTimeout(t);
  }
  t=setTimeout("disparait2()",50000)
  t=setTimeout("disparait()",40000)
}
function switche(numdiv)
{

  if(current)
  {
     document.getElementById(current).style.display="none";
  }
    document.getElementById(numdiv).style.display="";
  
	if((getOs()=="MSIE") && (getExplorerVersion() >= 6))
	{
		document.getElementById(numdiv).style.top = event.screenY - 500 + document.documentElement.scrollTop+"px";
	}
	else
	{
		document.getElementById(numdiv).style.top = event.screenY - 600 + document.documentElement.scrollTop+"px";
	}
	
    current=numdiv;
}

function disparait()
{
if(current)
{
 document.getElementById(current).style.display="none";
}
}

var current1;
function aa(numdiv1)
{
  if(current1)
  {
     document.getElementById(current1).style.display="none";
  }
  document.getElementById(numdiv1).style.display="";
  current1=numdiv1;
}
function disparait2()
{
if(current1)
{
 document.getElementById(current1).style.display="none";
}
}


function getOs()
{ 
    var OsObject = ""; 
   if(navigator.userAgent.indexOf("MSIE")>0) { 
        return "MSIE"; 
   } 
   if(isFirefox=navigator.userAgent.indexOf("Firefox")>0){ 
        return "Firefox"; 
   }
}

function getExplorerVersion() {
	var ieVers = parseFloat(navigator.appVersion);
	if( navigator.appName != 'Microsoft Internet Explorer' ) return ieVers;
	var tempVers = navigator.appVersion;
	var i = tempVers.indexOf( 'MSIE ' );
	if( i >= 0 ) {
		tempVers = tempVers.substring( i+5 );
		ieVers = parseFloat( tempVers ); 
	}
	return ieVers;
}