//images for subhead navigation
    uxIkWeetWaar = new Image();
    uxIkWeetWaar.src="/images/ikweet_top_waar.gif";
    uxIkWeetWaarO= new Image();
    uxIkWeetWaarO.src="/images/ikweet_top_waar_o.gif";
    uxIkWeetWat = new Image();
    uxIkWeetWat.src="/images/ikweet_top_wat.gif";
    uxIkWeetWatO= new Image();
    uxIkWeetWatO.src="/images/ikweet_top_wat_o.gif";
    uxIkWeetWat = new Image();
    uxIkWeetWat.src="/images/ikweet_top_wat.gif";
    uxIkWeetWatO= new Image();
    uxIkWeetWatO.src="/images/ikweet_top_wat_o.gif";
    uxIkZoekOpl = new Image();
    uxIkZoekOpl.src="/images/ikweet_top_zoekopl.gif";
    uxIkZoekOplO= new Image();
    uxIkZoekOplO.src="/images/ikweet_top_zoekopl_o.gif";
    uxIkZoekStud = new Image();
    uxIkZoekStud .src="/images/ikweet_top_zoekstud.gif";
    uxIkZoekStudO= new Image();
    uxIkZoekStudO.src="/images/ikweet_top_zoekstud_o.gif";
    
    function addSubHeadListeners()
    {
        var subHead1 = document.getElementById("uxIntroWhere");
        subHead1.defaultPic=uxIkWeetWaar.src;
        subHead1.rollOverPic=uxIkWeetWaarO.src;    
        subHead1.onmouseout=function(){mouseOver("uxIntroWhere", this.defaultPic)};
        subHead1.onmouseover=function(){mouseOver("uxIntroWhere",this.rollOverPic)};
        var subHead2 = document.getElementById("uxIntroWhat");
        subHead2.defaultPic=uxIkWeetWat.src;
        subHead2.rollOverPic=uxIkWeetWatO.src;    
        subHead2.onmouseout=function(){mouseOver("uxIntroWhat", this.defaultPic)};
        subHead2.onmouseover=function(){mouseOver("uxIntroWhat",this.rollOverPic)};
        var subHead3 = document.getElementById("uxIntroSearch");
        subHead3.defaultPic=uxIkZoekOpl.src;
        subHead3.rollOverPic=uxIkZoekOplO.src;    
        subHead3.onmouseout=function(){mouseOver("uxIntroSearch", this.defaultPic)};
        subHead3.onmouseover=function(){mouseOver("uxIntroSearch",this.rollOverPic)};
        /*
        var subHead4 = document.getElementById("uxIntroSearchTheme");
        subHead4.defaultPic=uxIkZoekStud.src;
        subHead4.rollOverPic=uxIkZoekStudO.src;    
        subHead4.onmouseout=function(){mouseOver("uxIntroSearchTheme", this.defaultPic)};
        subHead4.onmouseover=function(){mouseOver("uxIntroSearchTheme",this.rollOverPic)};*/
    }
    addLoadEvent(addSubHeadListeners);