var ver = parseFloat(navigator.appVersion);
   if( (navigator.appName == "Netscape" && ver >= 3) ||
       (navigator.appName == "Microsoft Internet Explorer" && ver >= 4)){


    nimg01     = new Image();
    nimg01.src = "images/buttons/BUT_welkom_O.gif";
	nimg02     = new Image();
    nimg02.src = "images/buttons/BUT_organisatie_O.gif";
    nimg03     = new Image();
    nimg03.src = "images/buttons/BUT_referenties_O.gif";
	nimg04     = new Image();
    nimg04.src = "images/buttons/BUT_contact_O.gif";
    
    nimg11     = new Image();
    nimg11.src = "images/buttons/BUT_welkom.gif";
	nimg12     = new Image();
    nimg12.src = "images/buttons/BUT_organisatie.gif";
    nimg13     = new Image();
    nimg13.src = "images/buttons/BUT_referenties.gif";
	nimg14     = new Image();
    nimg14.src = "images/buttons/BUT_contact.gif";

}



function hiLite( imgName) {
   var ver = parseFloat(navigator.appVersion);
   if( (navigator.appName == "Netscape" && ver >= 3) ||
       (navigator.appName == "Microsoft Internet Explorer" && ver >= 4)){

    document.images["p"+imgName].src = eval("nimg0"+imgName+".src")
    }
}

function deLite( imgName ) {
   var ver = parseFloat(navigator.appVersion);
   if( (navigator.appName == "Netscape" && ver >= 3) ||
       (navigator.appName == "Microsoft Internet Explorer" && ver >= 4)){

    document.images["p"+imgName].src = eval("nimg1"+imgName+".src")
    }
}