var W3C = false
var IE = false

useragent()

function useragent() {
	if (document.all) {
  	IE = true
  	return false
	}
	else if (document.getElementById) {
  	W3C = true
  	return false
	}
	else {
  	alert('Ihr Browser wird nicht unterstützt!')
	}
}

function init() {
	adjustContent()
	showLayer('screen')
	showLayer('content')
	checkWidth()
}

function initr() {
	hideLayer('screen')
	hideLayer('content')
	adjustContent()
	showLayer('screen')
	showLayer('content')
	checkWidth()
}

function checkWidth() {
	if (IE == true) {
		var winWidth = document.body.clientWidth
	}
	else if (W3C == true) {
		var winWidth = window.innerWidth
	}
	
	if (winWidth >= 916) {
		var fl = getLayer('flashlayer')
		fl.style.visibility = "visible" 
	}
}

function adjustContent() {
	if (IE == true) {
		var winHeight = document.body.clientHeight
  }
  else if (W3C == true) {
		var winHeight = window.innerHeight
  }
  
  var winDiff = winHeight-268
  var obj = getLayer('content')
  if (winDiff > obj.offsetHeight)
  	obj.style.height = parseInt(winDiff) + "px"
}

function getLayer(layername) {
  var layer
  if (W3C) {
    layer = eval('document.getElementById("' + layername + '")')
    return layer
  }
  else if (IE) {
    layer = eval('document.all.' + layername)
		return layer
  }
  else {
    return null
  }
}
    
function showLayer(objname) {
  var layer = getLayer(objname)
  layer.style.visibility = 'visible';
}

function hideLayer(objname) {
  var layer = getLayer(objname)
  layer.style.visibility = 'hidden';
}

function doMenuOn(bgid,typo) {
	bg = getLayer(bgid)
	bg.style.backgroundColor='8C8C8C'
	typo.className='over'
}
	
function doMenuOff(bgid,typo) {
	bg = getLayer(bgid)
	bg.style.backgroundColor='E8E8E8'
	typo.className=''
}