function newImage(arg) {
	    if (document.images) {
		    rslt = new Image();
		    rslt.src = arg;
		    return rslt;
	    }
    }

    function changeImagesArray(array) {
	    if (document.images && (preloadFlag == true)) {
		    for (var i=0; i<array.length; i+=2) {
			    document[array[i]].src = array[i+1];
		    }
	    }
    }

    function changeImages() {
	    changeImagesArray(changeImages.arguments);
    }

    function toggleImages() {
	    for (var i=0; i<toggleImages.arguments.length; i+=2) {
		    if (selected == toggleImages.arguments[i])      changeImagesArray(toggleImages.arguments[i+1]);
	    }
    }

    var selected = '';
    var preloadFlag = false;
    function preloadImages() {
	    if (document.images) {
	        home_over = newImage("App_Themes/Standard/Images/Nav/home-over.jpg");
	        Location_over = newImage("App_Themes/Standard/Images/Nav/Location-over.jpg");
	        Accommodation_over = newImage("App_Themes/Standard/Images/Nav/Accommodation-over.jpg");
	        Gallery_over = newImage("App_Themes/Standard/Images/Nav/Gallery-over.jpg");
	        Activities_over = newImage("App_Themes/Standard/Images/Nav/Activities-over.jpg");
	        History_over = newImage("App_Themes/Standard/Images/Nav/History-over.jpg");
	        Contact_over = newImage("App_Themes/Standard/Images/Nav/Contact-over.jpg");
	        preloadFlag = true;
	    }
    }