// preload the images if the browser can deal with them 
if (document.images) {

    // Main Navigation
    var homeoff = new Image();
      homeoff.src = "images/btn_home_f.gif";
    var homeon = new Image();
      homeon.src = "images/btn_home_o.gif";
      
    var weddingreceptionsoff = new Image();
      weddingreceptionsoff.src = "images/btn_weddingreceptions_f.gif";
    var weddingreceptionson = new Image();
      weddingreceptionson.src = "images/btn_weddingreceptions_o.gif";
      
    var galleryoff = new Image();
      galleryoff.src = "images/btn_gallery_f.gif";
    var galleryon = new Image();
      galleryon.src = "images/btn_gallery_o.gif";
      
    var historyofsteeplecourtoff = new Image();
      historyofsteeplecourtoff.src = "images/btn_historyofsteeplecourt_f.gif";
    var historyofsteeplecourton = new Image();
      historyofsteeplecourton.src = "images/btn_historyofsteeplecourt_o.gif";
      
    var locationandcontactsoff = new Image();
      locationandcontactsoff.src = "images/btn_locationandcontacts_f.gif";
    var locationandcontactson = new Image();
      locationandcontactson.src = "images/btn_locationandcontacts_o.gif";

}

// onMouseOver
function act(Passed_Name) {
    if (document.images){
      document[Passed_Name].src = eval(Passed_Name + "on.src");
    }
}

// onMouseOut
function inact(Passed_Name) {
    if (document.images){
      document[Passed_Name].src = eval(Passed_Name + "off.src");
    }
}