function BrowserCheck() {
	var b = navigator.appName
	if (b=="Netscape") this.b = "ns"
	else if (b=="Microsoft Internet Explorer") this.b = "ie"
	else this.b = b
	this.version = navigator.appVersion
	this.v = parseInt(this.version)
	this.ns = (this.b=="ns" && this.v>=4)
	this.ns4 = (this.b=="ns" && this.v==4)
	this.ns5 = (this.b=="ns" && this.v==5)
	this.ie = (this.b=="ie" && this.v>=4)
	this.ie4 = (this.version.indexOf('MSIE 4')>0)
	this.ie5 = (this.version.indexOf('MSIE 5')>0)
	this.min = (this.ns||this.ie)
}
is = new BrowserCheck()
actual=false
actualsub=false
function mostrar(n){
  stopTimer()
  ocultarsub()
  if (is.ie){
	if(actual){
		eval ("document.all['"+actual+"'].style.visibility='hidden'")
	}
	actual=n
	eval ("document.all['"+n+"'].style.visibility='visible'")
  }
  if (is.ns){
	if(actual){
		eval ("document."+actual+".visibility='hide'")
	}
	actual=n
	eval ("document."+n+".visibility='show'")
  }
}
function ocultar(){
  if (is.ie){
	if(actual){
		eval ("document.all['"+actual+"'].style.visibility='hidden'")
	}
	if(actualsub){
		eval ("document.all['"+actualsub+"'].style.visibility='hidden'")
	}
  }
  if (is.ns){
	if(actual){
		eval ("document."+actual+".visibility='hide'")
	}
	if(actualsub){
		eval ("document."+actualsub+".visibility='hide'")
	}
  }
}
function mostrarsub(n){
  stopTimer()
  if (is.ie){
	if(actualsub){
		eval ("document.all['"+actualsub+"'].style.visibility='hidden'")
	}
	actualsub=n
	eval ("document.all['"+n+"'].style.visibility='visible'")
  }
  if (is.ns){
	if(actualsub){
		eval ("document."+actualsub+".visibility='hide'")
	}
	actualsub=n
	eval ("document."+n+".visibility='show'")
  }
}
function ocultarsub(){
  if (is.ie){
	if(actualsub){
		eval ("document.all['"+actualsub+"'].style.visibility='hidden'")
	}
  }
  if (is.ns){
	if(actualsub){
		eval ("document."+actualsub+".visibility='hide'")
	}
  }
}
function stopTimer() {
    clearTimeout(sDisplayTimer)
}
function startTimer() {
    sDisplayTimer = setTimeout("ocultar()",iDelay)
}