//----------- Browser Detection -----------

var oldTimer = true;

if (parseInt(navigator.appVersion) >= 4) {
  oldTimer = false;
  var browserVar = navigator.platform;
  var isWin = browserVar.indexOf("Win") != -1;
  var isMac = browserVar.indexOf("Mac") != -1;
  if (document.layers) {
    var n4 = true;
  } else if (document.getElementById && !(document.all)) {
    var ns = true;
  } else if (document.getElementById && document.all) {
    var ie = true;
  } else if(document.all) {
    var i4 = true;
  }
}


//----------- Image Load Function -----------

function PreloadImage(name) {
  var img;
  img = new Image();
  img.src= name;
  return img;
}


if (document.images) { 
  navbtn_01_off = new PreloadImage('/ra/medias/liste/btn1.gif');
  navbtn_01_over = new PreloadImage('/ra/medias/liste/btn1_over.gif');
  navbtn_02_off = new PreloadImage('/ra/medias/liste/btn2.gif');
  navbtn_02_over = new PreloadImage('/ra/medias/liste/btn2_over.gif');
  navbtn_03_off = new PreloadImage('/ra/medias/liste/btn3.gif');
  navbtn_03_over = new PreloadImage('/ra/medias/liste/btn3_over.gif');
 
}


//----------- Image Rollover Functions -----------

function getSrc(imgName) {
	return eval(imgName + '.src');
}

function rollOver(imgName, imgSrc, imgWhere, imgWhereParent){

  if(document.images) {
    if(n4) {
    	if (imgWhere && imgWhereParent) {
      		document.layers[0].layers[imgWhereParent].layers[imgWhere].document.images[imgName].src = getSrc(imgSrc);
		} else if (imgWhere) {
      		document.layers[0].layers[imgWhere].document.images[imgName].src = getSrc(imgSrc);
		}
    } else {
      document.images[imgName].src = getSrc(imgSrc);    
    }
  }
}

// ----------------------- ----------------------- ||| visibility.js ||| ----------------------- -----------------------
//----------- Cross-Browser Layer Targeting -----------
var layerOn = null;

function getLayer(layerName) {
  var layer;
  if (n4) {
  	if (layerName.indexOf("ProjectCopy") == 0) {
  		return (document.layers[0].layers["allCopy"].layers[layerName]);
  	} else if (layerName.indexOf("awards") == 0) {
  		return (document.layers["CopyTwo"].layers[layerName]);
  	} else {
    		return(document.layers[layerName]);
    	}
 } else if (i4) {
  	if ((layerName.indexOf("faq") == 0) || (layerName.indexOf("Office") != -1)) {
    	return eval('document.all.' + layerName);
    } else {
    	return eval('document.all.' + layerName + '.style');
    }
  } else if (ie || ns) {
    return document.getElementById(layerName);
  } else {
    return(null);
  }
}

//----------- Layer Visibility -----------

function showLayer(layerName) {
  if (layerOn != null) {
	  hideLayer(layerOn);
	  var num = layerOn.substring(3,5);
	  //alert(num);
	  rollOver('nav'+num,'nav'+num+'_off');
  }
  layerOn = layerName;
  
  var layer = getLayer(layerName);
  if (n4) {
    layer.visibility = "show";
  } else if (i4) {
    layer.visibility = "visible";
  } else if (ie || ns) {
    layer.style.visibility = "visible";
  }
}

//----------- Layer Invisibility -----------

function hideLayer(layerName) {
		
  var layer = getLayer(layerName);
  if (n4) {
    layer.visibility = "hide";
  } else if (i4) {
    layer.visibility = "hidden";
  } else if (ie || ns) {
    layer.style.visibility = "hidden";
  }
}