function detectBrowser(){
    var version;
    var strChUserAgent = navigator.userAgent;
    var intSplitStart = strChUserAgent.indexOf("(",0);
    var intSplitEnd = strChUserAgent.indexOf(")",0);
    var strChStart = strChUserAgent.substring(0,intSplitStart);
    var strChMid = strChUserAgent.substring(intSplitStart, intSplitEnd);
    var strChEnd = strChUserAgent.substring(strChEnd);

    if(strChMid.indexOf("MSIE 7") != -1)
      version = 'IE7'; 
    else if(strChMid.indexOf("MSIE 8") != -1)
      version = 'IE8'; 
    else if(strChEnd.indexOf("Firefox") != -1)
      version = 'FF'; 
    else if(strChEnd.indexOf("Netscape") != -1)
      version = 'NS';
    else if(strChStart.indexOf("Opera") != -1)
      version = 'O';
    else if ((strChUserAgent.match(/iPhone/i)) || (strChUserAgent.match(/iPod/i)) || (strChUserAgent.match(/iPad/i)))
        version = 'SAFMOB';
    else if(strChEnd.indexOf("Safari") != -1){
        version = 'SAF';
    }  
    else if(strChEnd.indexOf("Chrome") != -1)
      version = 'CHROME';
    else
      version = 'OTHER';
      
    return version;
}

function preLoadPicture(url){
  var img = new Image();
  img.src=url;
  return img;
}

var version = detectBrowser();

if (version == 'SAFMOB'){
  var imgMob = preLoadPicture("./pictures/noFlash/en/Home_Page.png");
}

var img1 = preLoadPicture("./pictures/button_home.png");
var img2 = preLoadPicture("./pictures/button_home_over.png");
var img3 = preLoadPicture("./pictures/button_saas.png");
var img4 = preLoadPicture("./pictures/button_saas_over.png");
var img5 = preLoadPicture("./pictures/button_tv.png");
var img6 = preLoadPicture("./pictures/button_tv_over.png");